66632472027 has 72 divisors (see below), whose sum is σ = 108896016320. Its totient is φ = 39215404800.

The previous prime is 66632472019. The next prime is 66632472031. The reversal of 66632472027 is 72027423666.

It is not a de Polignac number, because 66632472027 - 2³ = 66632472019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66632672027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5241543 + ... + 5254239.

Almost surely, 2^66632472027 is an apocalyptic number.

66632472027 is a deficient number, since it is larger than the sum of its proper divisors (42263544293).

66632472027 is a wasteful number, since it uses less digits than its factorization.

66632472027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12865 (or 12851 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 66632472027 in words is "sixty-six billion, six hundred thirty-two million, four hundred seventy-two thousand, twenty-seven".