268157216475 has 36 divisors (see below), whose sum is σ = 480994727512. Its totient is φ = 142810128000.

The previous prime is 268157216447. The next prime is 268157216479. The reversal of 268157216475 is 574612751862.

It is a happy number.

268157216475 is a `hidden beast` number, since 2 + 6 + 8 + 1 + 572 + 1 + 64 + 7 + 5 = 666.

It is not a de Polignac number, because 268157216475 - 2⁷ = 268157216347 is a prime.

It is a super-2 number, since 2×268157216475² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268157216479) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 706906 + ... + 1017855.

Almost surely, 2^268157216475 is an apocalyptic number.

268157216475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

268157216475 is a deficient number, since it is larger than the sum of its proper divisors (212837511037).

268157216475 is a wasteful number, since it uses less digits than its factorization.

268157216475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725468 (or 1725460 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The spelling of 268157216475 in words is "two hundred sixty-eight billion, one hundred fifty-seven million, two hundred sixteen thousand, four hundred seventy-five".