2620256500431 has 16 divisors (see below), whose sum is σ = 3903308237920. Its totient is φ = 1737186626880.

The previous prime is 2620256500427. The next prime is 2620256500439. The reversal of 2620256500431 is 1340056520262.

2620256500431 is a `hidden beast` number, since 2 + 62 + 0 + 2 + 56 + 500 + 43 + 1 = 666.

It is not a de Polignac number, because 2620256500431 - 2² = 2620256500427 is a prime.

It is a super-2 number, since 2×2620256500431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620256500439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268079470 + ... + 268089243.

It is an arithmetic number, because the mean of its divisors is an integer number (243956764870).

Almost surely, 2^{2620256500431} is an apocalyptic number.

2620256500431 is a deficient number, since it is larger than the sum of its proper divisors (1283051737489).

2620256500431 is a wasteful number, since it uses less digits than its factorization.

2620256500431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536168903 (or 536168897 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 2620256500431 in words is "two trillion, six hundred twenty billion, two hundred fifty-six million, five hundred thousand, four hundred thirty-one".