66764317502 has 8 divisors (see below), whose sum is σ = 100583797800. Its totient is φ = 33236384904.

The previous prime is 66764317441. The next prime is 66764317523. The reversal of 66764317502 is 20571346766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72886352 + ... + 72887267.

It is an arithmetic number, because the mean of its divisors is an integer number (12572974725).

Almost surely, 2^66764317502 is an apocalyptic number.

66764317502 is a deficient number, since it is larger than the sum of its proper divisors (33819480298).

66764317502 is a wasteful number, since it uses less digits than its factorization.

66764317502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145773850.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 66764317502 in words is "sixty-six billion, seven hundred sixty-four million, three hundred seventeen thousand, five hundred two".