66554162724 has 48 divisors (see below), whose sum is σ = 179724339200. Its totient is φ = 18774770976.

The previous prime is 66554162723. The next prime is 66554162737. The reversal of 66554162724 is 42726145566.

It is a super-2 number, since 2×66554162724² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66554162723) 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, 5007994 + ... + 5021265.

Almost surely, 2^66554162724 is an apocalyptic number.

It is an amenable number.

66554162724 is an abundant number, since it is smaller than the sum of its proper divisors (113170176476).

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

66554162724 is a wasteful number, since it uses less digits than its factorization.

66554162724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10029352 (or 10029350 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 48.

The spelling of 66554162724 in words is "sixty-six billion, five hundred fifty-four million, one hundred sixty-two thousand, seven hundred twenty-four".