20066031728456 has 64 divisors (see below), whose sum is σ = 43402023936000. Its totient is φ = 8519056644672.

The previous prime is 20066031728447. The next prime is 20066031728459. The reversal of 20066031728456 is 65482713066002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20066031728459) 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, 285777305 + ... + 285847511.

It is an arithmetic number, because the mean of its divisors is an integer number (678156624000).

Almost surely, 2^{20066031728456} is an apocalyptic number.

It is an amenable number.

20066031728456 is an abundant number, since it is smaller than the sum of its proper divisors (23335992207544).

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

20066031728456 is a wasteful number, since it uses less digits than its factorization.

20066031728456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118026 (or 118022 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 20066031728456 in words is "twenty trillion, sixty-six billion, thirty-one million, seven hundred twenty-eight thousand, four hundred fifty-six".