268860978955 has 32 divisors (see below), whose sum is σ = 338973511680. Its totient is φ = 204448440960.

The previous prime is 268860978929. The next prime is 268860978959. The reversal of 268860978955 is 559879068862.

It is not a de Polignac number, because 268860978955 - 2²⁷ = 268726761227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268860978959) 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 31 ways as a sum of consecutive naturals, for example, 11300482 + ... + 11324248.

It is an arithmetic number, because the mean of its divisors is an integer number (10592922240).

Almost surely, 2^268860978955 is an apocalyptic number.

268860978955 is a deficient number, since it is larger than the sum of its proper divisors (70112532725).

268860978955 is a wasteful number, since it uses less digits than its factorization.

268860978955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25099.

The product of its (nonzero) digits is 522547200, while the sum is 73.

The spelling of 268860978955 in words is "two hundred sixty-eight billion, eight hundred sixty million, nine hundred seventy-eight thousand, nine hundred fifty-five".