1256316204115 has 128 divisors (see below), whose sum is σ = 1833891840000. Its totient is φ = 808206336000.

The previous prime is 1256316204113. The next prime is 1256316204131. The reversal of 1256316204115 is 5114026136521.

It is not a de Polignac number, because 1256316204115 - 2¹ = 1256316204113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1256316204113) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2798031411 + ... + 2798031859.

It is an arithmetic number, because the mean of its divisors is an integer number (14327280000).

Almost surely, 2^{1256316204115} is an apocalyptic number.

1256316204115 is a deficient number, since it is larger than the sum of its proper divisors (577575635885).

1256316204115 is a wasteful number, since it uses less digits than its factorization.

1256316204115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 1256316204115 in words is "one trillion, two hundred fifty-six billion, three hundred sixteen million, two hundred four thousand, one hundred fifteen".