66972794060 has 12 divisors (see below), whose sum is σ = 140642867568. Its totient is φ = 26789117616.

The previous prime is 66972794033. The next prime is 66972794069. The reversal of 66972794060 is 6049727966.

It is a junction number, because it is equal to n+sod(n) for n = 66972793987 and 66972794005.

It is not an unprimeable number, because it can be changed into a prime (66972794069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674319832 + ... + 1674319871.

It is an arithmetic number, because the mean of its divisors is an integer number (11720238964).

Almost surely, 2^66972794060 is an apocalyptic number.

It is an amenable number.

66972794060 is an abundant number, since it is smaller than the sum of its proper divisors (73670073508).

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

66972794060 is a wasteful number, since it uses less digits than its factorization.

66972794060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348639712 (or 3348639710 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 66972794060 in words is "sixty-six billion, nine hundred seventy-two million, seven hundred ninety-four thousand, sixty".