20858846568 has 32 divisors (see below), whose sum is σ = 59596704960. Its totient is φ = 5959670400.

The previous prime is 20858846557. The next prime is 20858846573. The reversal of 20858846568 is 86564885802.

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, 62079733 + ... + 62080068.

It is an arithmetic number, because the mean of its divisors is an integer number (1862397030).

Almost surely, 2^20858846568 is an apocalyptic number.

20858846568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20858846568 is an abundant number, since it is smaller than the sum of its proper divisors (38737858392).

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

20858846568 is a wasteful number, since it uses less digits than its factorization.

20858846568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124159817 (or 124159813 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 60.

The spelling of 20858846568 in words is "twenty billion, eight hundred fifty-eight million, eight hundred forty-six thousand, five hundred sixty-eight".