268510963391 has 16 divisors (see below), whose sum is σ = 295395379200. Its totient is φ = 244056666040.

The previous prime is 268510963337. The next prime is 268510963393. The reversal of 268510963391 is 193369015862.

It is not a de Polignac number, because 268510963391 - 2¹⁰ = 268510962367 is a prime.

It is a super-2 number, since 2×268510963391² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268510963393) 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, 9007970 + ... + 9037728.

It is an arithmetic number, because the mean of its divisors is an integer number (18462211200).

Almost surely, 2^268510963391 is an apocalyptic number.

268510963391 is a deficient number, since it is larger than the sum of its proper divisors (26884415809).

268510963391 is an equidigital number, since it uses as much as digits as its factorization.

268510963391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36571 (or 36549 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 268510963391 in words is "two hundred sixty-eight billion, five hundred ten million, nine hundred sixty-three thousand, three hundred ninety-one".