268533776432 has 160 divisors (see below), whose sum is σ = 584179610112. Its totient is φ = 118923374592.

The previous prime is 268533776419. The next prime is 268533776443. The reversal of 268533776432 is 234677335862.

It is a happy number.

It is a super-2 number, since 2×268533776432² (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 31 ways as a sum of consecutive naturals, for example, 143830763 + ... + 143832629.

Almost surely, 2^268533776432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268533776432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292089805056).

268533776432 is an abundant number, since it is smaller than the sum of its proper divisors (315645833680).

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

268533776432 is a wasteful number, since it uses less digits than its factorization.

268533776432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2269 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 56.

The spelling of 268533776432 in words is "two hundred sixty-eight billion, five hundred thirty-three million, seven hundred seventy-six thousand, four hundred thirty-two".