20757133676 has 12 divisors (see below), whose sum is σ = 36333709608. Its totient is φ = 10376073792.

The previous prime is 20757133609. The next prime is 20757133687. The reversal of 20757133676 is 67633175702.

It is a self number, because there is not a number n which added to its sum of digits gives 20757133676.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604466 + ... + 637881.

It is an arithmetic number, because the mean of its divisors is an integer number (3027809134).

Almost surely, 2^20757133676 is an apocalyptic number.

It is an amenable number.

20757133676 is a deficient number, since it is larger than the sum of its proper divisors (15576575932).

20757133676 is a wasteful number, since it uses less digits than its factorization.

20757133676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246528 (or 1246526 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 47.

The spelling of 20757133676 in words is "twenty billion, seven hundred fifty-seven million, one hundred thirty-three thousand, six hundred seventy-six".