445464646121 has 24 divisors (see below), whose sum is σ = 518867564040. Its totient is φ = 380835924480.

The previous prime is 445464646111. The next prime is 445464646169. The reversal of 445464646121 is 121646464544.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 198519258025 + 246945388096 = 445555^2 + 496936^2 .

It is not a de Polignac number, because 445464646121 - 2¹⁴ = 445464629737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445464646111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2456975 + ... + 2632043.

It is an arithmetic number, because the mean of its divisors is an integer number (21619481835).

Almost surely, 2^445464646121 is an apocalyptic number.

It is an amenable number.

445464646121 is a deficient number, since it is larger than the sum of its proper divisors (73402917919).

445464646121 is a wasteful number, since it uses less digits than its factorization.

445464646121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176345 (or 176334 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 47.

The spelling of 445464646121 in words is "four hundred forty-five billion, four hundred sixty-four million, six hundred forty-six thousand, one hundred twenty-one".