268939511438 has 16 divisors (see below), whose sum is σ = 434452379760. Its totient is φ = 124122605376.

The previous prime is 268939511429. The next prime is 268939511443. The reversal of 268939511438 is 834115939862.

It is a happy number.

It is a congruent number.

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, 1040978 + ... + 1273386.

It is an arithmetic number, because the mean of its divisors is an integer number (27153273735).

Almost surely, 2^268939511438 is an apocalyptic number.

268939511438 is a deficient number, since it is larger than the sum of its proper divisors (165512868322).

268939511438 is a wasteful number, since it uses less digits than its factorization.

268939511438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276931.

The product of its digits is 11197440, while the sum is 59.

The spelling of 268939511438 in words is "two hundred sixty-eight billion, nine hundred thirty-nine million, five hundred eleven thousand, four hundred thirty-eight".