20685574277792 has 24 divisors (see below), whose sum is σ = 40789264374432. Its totient is φ = 10326396024000.

The previous prime is 20685574277791. The next prime is 20685574277803. The reversal of 20685574277792 is 29777247558602.

It is not an unprimeable number, because it can be changed into a prime (20685574277791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512201834 + ... + 512242217.

It is an arithmetic number, because the mean of its divisors is an integer number (1699552682268).

Almost surely, 2^{20685574277792} is an apocalyptic number.

It is an amenable number.

20685574277792 is a deficient number, since it is larger than the sum of its proper divisors (20103690096640).

20685574277792 is a wasteful number, since it uses less digits than its factorization.

20685574277792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024444692 (or 1024444684 counting only the distinct ones).

The product of its (nonzero) digits is 829785600, while the sum is 71.

The spelling of 20685574277792 in words is "twenty trillion, six hundred eighty-five billion, five hundred seventy-four million, two hundred seventy-seven thousand, seven hundred ninety-two".