10165256387 has 32 divisors (see below), whose sum is σ = 12557293056. Its totient is φ = 8096774400.

The previous prime is 10165256377. The next prime is 10165256393. The reversal of 10165256387 is 78365256101.

It is not a de Polignac number, because 10165256387 - 2⁴ = 10165256371 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (10165256347) 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, 419063 + ... + 442655.

It is an arithmetic number, because the mean of its divisors is an integer number (392415408).

Almost surely, 2^10165256387 is an apocalyptic number.

10165256387 is a deficient number, since it is larger than the sum of its proper divisors (2392036669).

10165256387 is a wasteful number, since it uses less digits than its factorization.

10165256387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23771.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 10165256387 in words is "ten billion, one hundred sixty-five million, two hundred fifty-six thousand, three hundred eighty-seven".