2620256500399 has 32 divisors (see below), whose sum is σ = 2697334738560. Its totient is φ = 2544651583488.

The previous prime is 2620256500357. The next prime is 2620256500403. The reversal of 2620256500399 is 9930056520262.

It is a cyclic number.

It is not a de Polignac number, because 2620256500399 - 2¹¹ = 2620256498351 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 (2620256500339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 887318707 + ... + 887321659.

It is an arithmetic number, because the mean of its divisors is an integer number (84291710580).

Almost surely, 2^{2620256500399} is an apocalyptic number.

2620256500399 is a deficient number, since it is larger than the sum of its proper divisors (77078238161).

2620256500399 is a wasteful number, since it uses less digits than its factorization.

2620256500399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3811.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 2620256500399 in words is "two trillion, six hundred twenty billion, two hundred fifty-six million, five hundred thousand, three hundred ninety-nine".