256462514787 has 16 divisors (see below), whose sum is σ = 342489002240. Its totient is φ = 170705727072.

The previous prime is 256462514773. The next prime is 256462514827. The reversal of 256462514787 is 787415264652.

It is not a de Polignac number, because 256462514787 - 2⁴ = 256462514771 is a prime.

It is a super-3 number, since 3×256462514787³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256462513787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5163789 + ... + 5213217.

It is an arithmetic number, because the mean of its divisors is an integer number (21405562640).

Almost surely, 2^256462514787 is an apocalyptic number.

256462514787 is a deficient number, since it is larger than the sum of its proper divisors (86026487453).

256462514787 is a wasteful number, since it uses less digits than its factorization.

256462514787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52122.

The product of its digits is 22579200, while the sum is 57.

The spelling of 256462514787 in words is "two hundred fifty-six billion, four hundred sixty-two million, five hundred fourteen thousand, seven hundred eighty-seven".