66737124972 has 36 divisors (see below), whose sum is σ = 192796139536. Its totient is φ = 19067749920.

The previous prime is 66737124947. The next prime is 66737124977. The reversal of 66737124972 is 27942173766.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66737124977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132414679 + ... + 132415182.

Almost surely, 2^66737124972 is an apocalyptic number.

It is an amenable number.

66737124972 is an abundant number, since it is smaller than the sum of its proper divisors (126059014564).

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

66737124972 is a wasteful number, since it uses less digits than its factorization.

66737124972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264829878 (or 264829873 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The spelling of 66737124972 in words is "sixty-six billion, seven hundred thirty-seven million, one hundred twenty-four thousand, nine hundred seventy-two".