268292496520 has 32 divisors (see below), whose sum is σ = 639167419800. Its totient is φ = 101004233728.

The previous prime is 268292496497. The next prime is 268292496551. The reversal of 268292496520 is 25694292862.

It can be written as a sum of positive squares in 4 ways, for example, as 250714509796 + 17577986724 = 500714^2 + 132582^2 .

It is a super-2 number, since 2×268292496520² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197273215 + ... + 197274574.

Almost surely, 2^268292496520 is an apocalyptic number.

268292496520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268292496520 is an abundant number, since it is smaller than the sum of its proper divisors (370874923280).

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

268292496520 is a wasteful number, since it uses less digits than its factorization.

268292496520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394547817 (or 394547813 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 268292496520 in words is "two hundred sixty-eight billion, two hundred ninety-two million, four hundred ninety-six thousand, five hundred twenty".