11964238520 has 64 divisors (see below), whose sum is σ = 29011500000. Its totient is φ = 4414330368.

The previous prime is 11964238511. The next prime is 11964238541. The reversal of 11964238520 is 2583246911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771806 + ... + 787154.

Almost surely, 2^11964238520 is an apocalyptic number.

11964238520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11964238520 is an abundant number, since it is smaller than the sum of its proper divisors (17047261480).

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

11964238520 is a wasteful number, since it uses less digits than its factorization.

11964238520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16872 (or 16868 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 11964238520 in words is "eleven billion, nine hundred sixty-four million, two hundred thirty-eight thousand, five hundred twenty".