2506310612561 has 16 divisors (see below), whose sum is σ = 3078112830336. Its totient is φ = 1991720054016.

The previous prime is 2506310612483. The next prime is 2506310612563. The reversal of 2506310612561 is 1652160136052.

It is not a de Polignac number, because 2506310612561 - 2¹⁰ = 2506310611537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2506310612563) 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, 157166906 + ... + 157182851.

It is an arithmetic number, because the mean of its divisors is an integer number (192382051896).

Almost surely, 2^{2506310612561} is an apocalyptic number.

It is an amenable number.

2506310612561 is a deficient number, since it is larger than the sum of its proper divisors (571802217775).

2506310612561 is a wasteful number, since it uses less digits than its factorization.

2506310612561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314349848.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 2506310612561 in words is "two trillion, five hundred six billion, three hundred ten million, six hundred twelve thousand, five hundred sixty-one".