66892074988 has 6 divisors (see below), whose sum is σ = 117061131236. Its totient is φ = 33446037492.

The previous prime is 66892074967. The next prime is 66892075027. The reversal of 66892074988 is 88947029866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8361509370 + ... + 8361509377.

Almost surely, 2^66892074988 is an apocalyptic number.

It is an amenable number.

66892074988 is a deficient number, since it is larger than the sum of its proper divisors (50169056248).

66892074988 is a wasteful number, since it uses less digits than its factorization.

66892074988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16723018751 (or 16723018749 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 66892074988 in words is "sixty-six billion, eight hundred ninety-two million, seventy-four thousand, nine hundred eighty-eight".