66432431265 has 32 divisors (see below), whose sum is σ = 107955680256. Its totient is φ = 34877905920.

The previous prime is 66432431257. The next prime is 66432431327. The reversal of 66432431265 is 56213423466.

It is a happy number.

It is not a de Polignac number, because 66432431265 - 2³ = 66432431257 is a prime.

It is a Curzon number.

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, 512272 + ... + 628718.

It is an arithmetic number, because the mean of its divisors is an integer number (3373615008).

Almost surely, 2^66432431265 is an apocalyptic number.

It is an amenable number.

66432431265 is a deficient number, since it is larger than the sum of its proper divisors (41523248991).

66432431265 is a wasteful number, since it uses less digits than its factorization.

66432431265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117049.

The product of its digits is 622080, while the sum is 42.

The spelling of 66432431265 in words is "sixty-six billion, four hundred thirty-two million, four hundred thirty-one thousand, two hundred sixty-five".