66970452719688 has 64 divisors (see below), whose sum is σ = 191345656181760. Its totient is φ = 19134264507456.

The previous prime is 66970452719657. The next prime is 66970452719749. The reversal of 66970452719688 is 88691725407966.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20792845 + ... + 23796707.

It is an arithmetic number, because the mean of its divisors is an integer number (2989775877840).

Almost surely, 2^{66970452719688} is an apocalyptic number.

It is an amenable number.

66970452719688 is an abundant number, since it is smaller than the sum of its proper divisors (124375203462072).

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

66970452719688 is a wasteful number, since it uses less digits than its factorization.

66970452719688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136586 (or 3136582 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 78.

The spelling of 66970452719688 in words is "sixty-six trillion, nine hundred seventy billion, four hundred fifty-two million, seven hundred nineteen thousand, six hundred eighty-eight".