2631106451663 has 4 divisors (see below), whose sum is σ = 2745502384368. Its totient is φ = 2516710518960.

The previous prime is 2631106451647. The next prime is 2631106451669. The reversal of 2631106451663 is 3661546011362.

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

It is a cyclic number.

It is not a de Polignac number, because 2631106451663 - 2⁴ = 2631106451647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631106451669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57197966318 + ... + 57197966363.

It is an arithmetic number, because the mean of its divisors is an integer number (686375596092).

Almost surely, 2^{2631106451663} is an apocalyptic number.

2631106451663 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2631106451663 is a deficient number, since it is larger than the sum of its proper divisors (114395932705).

2631106451663 is a wasteful number, since it uses less digits than its factorization.

2631106451663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114395932704.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 2631106451663 in words is "two trillion, six hundred thirty-one billion, one hundred six million, four hundred fifty-one thousand, six hundred sixty-three".