66969700088 has 8 divisors (see below), whose sum is σ = 125568187680. Its totient is φ = 33484850040.

The previous prime is 66969700067. The next prime is 66969700099. The reversal of 66969700088 is 88000796966.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4185606248 + ... + 4185606263.

It is an arithmetic number, because the mean of its divisors is an integer number (15696023460).

Almost surely, 2^66969700088 is an apocalyptic number.

It is an amenable number.

66969700088 is a deficient number, since it is larger than the sum of its proper divisors (58598487592).

66969700088 is a wasteful number, since it uses less digits than its factorization.

66969700088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8371212517 (or 8371212513 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 66969700088 in words is "sixty-six billion, nine hundred sixty-nine million, seven hundred thousand, eighty-eight".