66692028792 has 32 divisors (see below), whose sum is σ = 170277523200. Its totient is φ = 21757682784.

The previous prime is 66692028791. The next prime is 66692028797. The reversal of 66692028792 is 29782029666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66692028791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29560942 + ... + 29563197.

It is an arithmetic number, because the mean of its divisors is an integer number (5321172600).

Almost surely, 2^66692028792 is an apocalyptic number.

It is an amenable number.

66692028792 is an abundant number, since it is smaller than the sum of its proper divisors (103585494408).

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

66692028792 is a wasteful number, since it uses less digits than its factorization.

66692028792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59124195 (or 59124191 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 66692028792 in words is "sixty-six billion, six hundred ninety-two million, twenty-eight thousand, seven hundred ninety-two".