20571928796 has 24 divisors (see below), whose sum is σ = 36516686976. Its totient is φ = 10138659440.

The previous prime is 20571928787. The next prime is 20571928829. The reversal of 20571928796 is 69782917502.

It is a super-3 number, since 3×20571928796³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1967735 + ... + 1978161.

It is an arithmetic number, because the mean of its divisors is an integer number (1521528624).

Almost surely, 2^20571928796 is an apocalyptic number.

It is an amenable number.

20571928796 is a deficient number, since it is larger than the sum of its proper divisors (15944758180).

20571928796 is a wasteful number, since it uses less digits than its factorization.

20571928796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17449 (or 17447 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The spelling of 20571928796 in words is "twenty billion, five hundred seventy-one million, nine hundred twenty-eight thousand, seven hundred ninety-six".