66604014252 has 72 divisors (see below), whose sum is σ = 174456522240. Its totient is φ = 21410494560.

The previous prime is 66604014251. The next prime is 66604014277. The reversal of 66604014252 is 25241040666.

66604014252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (66604014251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150024 + ... + 394607.

Almost surely, 2^66604014252 is an apocalyptic number.

It is an amenable number.

66604014252 is an abundant number, since it is smaller than the sum of its proper divisors (107852507988).

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

66604014252 is a wasteful number, since it uses less digits than its factorization.

66604014252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544763 (or 544758 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 66604014252 in words is "sixty-six billion, six hundred four million, fourteen thousand, two hundred fifty-two".