66115271232 has 84 divisors (see below), whose sum is σ = 190228484160. Its totient is φ = 21954577152.

The previous prime is 66115271227. The next prime is 66115271263. The reversal of 66115271232 is 23217251166.

66115271232 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 527 + 123 + 2 = 666.

66115271232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66732 + ... + 369707.

Almost surely, 2^66115271232 is an apocalyptic number.

It is an amenable number.

66115271232 is an abundant number, since it is smaller than the sum of its proper divisors (124113212928).

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

66115271232 is a wasteful number, since it uses less digits than its factorization.

66115271232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436720 (or 436707 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The spelling of 66115271232 in words is "sixty-six billion, one hundred fifteen million, two hundred seventy-one thousand, two hundred thirty-two".