268918993476 has 81 divisors (see below), whose sum is σ = 790813946559. Its totient is φ = 76827775248.

The previous prime is 268918993463. The next prime is 268918993493. The reversal of 268918993476 is 674399819862.

The square root of 268918993476 is 518574.

It is a perfect power (a square), and thus also a powerful number.

268918993476 is a `hidden beast` number, since 2 + 68 + 9 + 1 + 8 + 9 + 93 + 476 = 666.

268918993476 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 21773935 + ... + 21786281.

Almost surely, 2^268918993476 is an apocalyptic number.

268918993476 is the 518574-th square number.

It is an amenable number.

268918993476 is an abundant number, since it is smaller than the sum of its proper divisors (521894953083).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268918993476 is an equidigital number, since it uses as much as digits as its factorization.

268918993476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24718 (or 12359 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 72.

The spelling of 268918993476 in words is "two hundred sixty-eight billion, nine hundred eighteen million, nine hundred ninety-three thousand, four hundred seventy-six".