66936946712572 has 48 divisors (see below), whose sum is σ = 118124702035200. Its totient is φ = 33188465187072.

The previous prime is 66936946712569. The next prime is 66936946712579. The reversal of 66936946712572 is 27521764963966.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66936946712495 and 66936946712504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66936946712579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235363123 + ... + 235647349.

It is an arithmetic number, because the mean of its divisors is an integer number (2460931292400).

Almost surely, 2^{66936946712572} is an apocalyptic number.

It is an amenable number.

66936946712572 is a deficient number, since it is larger than the sum of its proper divisors (51187755322628).

66936946712572 is a wasteful number, since it uses less digits than its factorization.

66936946712572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285490 (or 285488 counting only the distinct ones).

The product of its digits is 1234517760, while the sum is 73.

The spelling of 66936946712572 in words is "sixty-six trillion, nine hundred thirty-six billion, nine hundred forty-six million, seven hundred twelve thousand, five hundred seventy-two".