66190752884 has 24 divisors (see below), whose sum is σ = 122635158240. Its totient is φ = 31172274144.

The previous prime is 66190752863. The next prime is 66190752899. The reversal of 66190752884 is 48825709166.

It is a happy number.

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, 2503994 + ... + 2530289.

It is an arithmetic number, because the mean of its divisors is an integer number (5109798260).

Almost surely, 2^66190752884 is an apocalyptic number.

It is an amenable number.

66190752884 is a deficient number, since it is larger than the sum of its proper divisors (56444405356).

66190752884 is a wasteful number, since it uses less digits than its factorization.

66190752884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034479 (or 5034477 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 66190752884 in words is "sixty-six billion, one hundred ninety million, seven hundred fifty-two thousand, eight hundred eighty-four".