66905020596 has 24 divisors (see below), whose sum is σ = 157106061280. Its totient is φ = 22159624032.

The previous prime is 66905020583. The next prime is 66905020613. The reversal of 66905020596 is 69502050966.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17754226 + ... + 17757993.

Almost surely, 2^66905020596 is an apocalyptic number.

It is an amenable number.

66905020596 is an abundant number, since it is smaller than the sum of its proper divisors (90201040684).

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

66905020596 is a wasteful number, since it uses less digits than its factorization.

66905020596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35512383 (or 35512381 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 66905020596 in words is "sixty-six billion, nine hundred five million, twenty thousand, five hundred ninety-six".