2612551633645 has 4 divisors (see below), whose sum is σ = 3135061960380. Its totient is φ = 2090041306912.

The previous prime is 2612551633633. The next prime is 2612551633651. The reversal of 2612551633645 is 5463361552162.

2612551633645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1526514612484 + 1086037021161 = 1235522^2 + 1042131^2 .

It is a cyclic number.

It is not a de Polignac number, because 2612551633645 - 2¹⁵ = 2612551600877 is a prime.

It is a super-3 number, since 3×2612551633645³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261255163360 + ... + 261255163369.

It is an arithmetic number, because the mean of its divisors is an integer number (783765490095).

Almost surely, 2^{2612551633645} is an apocalyptic number.

It is an amenable number.

2612551633645 is a deficient number, since it is larger than the sum of its proper divisors (522510326735).

2612551633645 is an equidigital number, since it uses as much as digits as its factorization.

2612551633645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522510326734.

The product of its digits is 3888000, while the sum is 49.

The spelling of 2612551633645 in words is "two trillion, six hundred twelve billion, five hundred fifty-one million, six hundred thirty-three thousand, six hundred forty-five".