20857676802 has 16 divisors (see below), whose sum is σ = 41731813920. Its totient is φ = 6949815552.

The previous prime is 20857676789. The next prime is 20857676837. The reversal of 20857676802 is 20867675802.

It is a happy 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, 669343 + ... + 699810.

It is an arithmetic number, because the mean of its divisors is an integer number (2608238370).

Almost surely, 2^20857676802 is an apocalyptic number.

20857676802 is an abundant number, since it is smaller than the sum of its proper divisors (20874137118).

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

20857676802 is a wasteful number, since it uses less digits than its factorization.

20857676802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371697.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 20857676802 in words is "twenty billion, eight hundred fifty-seven million, six hundred seventy-six thousand, eight hundred two".