20904700858 has 8 divisors (see below), whose sum is σ = 31358056320. Its totient is φ = 10452015420.

The previous prime is 20904700849. The next prime is 20904700891. The reversal of 20904700858 is 85800740902.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 80458 + ... + 219733.

It is an arithmetic number, because the mean of its divisors is an integer number (3919757040).

Almost surely, 2^20904700858 is an apocalyptic number.

20904700858 is a deficient number, since it is larger than the sum of its proper divisors (10453355462).

20904700858 is a wasteful number, since it uses less digits than its factorization.

20904700858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335012.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 20904700858 in words is "twenty billion, nine hundred four million, seven hundred thousand, eight hundred fifty-eight".