66180530560 has 32 divisors (see below), whose sum is σ = 158212832400. Its totient is φ = 26472211968.

The previous prime is 66180530527. The next prime is 66180530573. The reversal of 66180530560 is 6503508166.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51702900 + ... + 51704179.

Almost surely, 2^66180530560 is an apocalyptic number.

It is an amenable number.

66180530560 is an abundant number, since it is smaller than the sum of its proper divisors (92032301840).

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

66180530560 is a wasteful number, since it uses less digits than its factorization.

66180530560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103407098 (or 103407086 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 66180530560 in words is "sixty-six billion, one hundred eighty million, five hundred thirty thousand, five hundred sixty".