66432145605 has 16 divisors (see below), whose sum is σ = 121475923584. Its totient is φ = 30368980800.

The previous prime is 66432145603. The next prime is 66432145613. The reversal of 66432145605 is 50654123466.

It is not a de Polignac number, because 66432145605 - 2¹ = 66432145603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66432145601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316343446 + ... + 316343655.

It is an arithmetic number, because the mean of its divisors is an integer number (7592245224).

Almost surely, 2^66432145605 is an apocalyptic number.

It is an amenable number.

66432145605 is a deficient number, since it is larger than the sum of its proper divisors (55043777979).

66432145605 is a wasteful number, since it uses less digits than its factorization.

66432145605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632687116.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 66432145605 in words is "sixty-six billion, four hundred thirty-two million, one hundred forty-five thousand, six hundred five".