2631445612656 has 80 divisors (see below), whose sum is σ = 7777234677504. Its totient is φ = 751047593472.

The previous prime is 2631445612651. The next prime is 2631445612667. The reversal of 2631445612656 is 6562165441362.

It is a super-2 number, since 2×2631445612656² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2631445612599 and 2631445612608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631445612651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3816805 + ... + 4453188.

Almost surely, 2^{2631445612656} is an apocalyptic number.

It is an amenable number.

2631445612656 is an abundant number, since it is smaller than the sum of its proper divisors (5145789064848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2631445612656 is a wasteful number, since it uses less digits than its factorization.

2631445612656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8270958 (or 8270952 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 51.

The spelling of 2631445612656 in words is "two trillion, six hundred thirty-one billion, four hundred forty-five million, six hundred twelve thousand, six hundred fifty-six".