66365073740 has 48 divisors (see below), whose sum is σ = 162526728000. Its totient is φ = 22753737216.

The previous prime is 66365073713. The next prime is 66365073757. The reversal of 66365073740 is 4737056366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4830245 + ... + 4843964.

It is an arithmetic number, because the mean of its divisors is an integer number (3385973500).

Almost surely, 2^66365073740 is an apocalyptic number.

It is an amenable number.

66365073740 is an abundant number, since it is smaller than the sum of its proper divisors (96161654260).

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

66365073740 is a wasteful number, since it uses less digits than its factorization.

66365073740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9674239 (or 9674223 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 66365073740 in words is "sixty-six billion, three hundred sixty-five million, seventy-three thousand, seven hundred forty".