66570322452 has 24 divisors (see below), whose sum is σ = 155402692032. Its totient is φ = 22179830400.

The previous prime is 66570322447. The next prime is 66570322453. The reversal of 66570322452 is 25422307566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570322453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257624 + ... + 1309487.

It is an arithmetic number, because the mean of its divisors is an integer number (6475112168).

Almost surely, 2^66570322452 is an apocalyptic number.

It is an amenable number.

66570322452 is an abundant number, since it is smaller than the sum of its proper divisors (88832369580).

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

66570322452 is a wasteful number, since it uses less digits than its factorization.

66570322452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569279 (or 2569277 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 66570322452 in words is "sixty-six billion, five hundred seventy million, three hundred twenty-two thousand, four hundred fifty-two".