20858722072 has 8 divisors (see below), whose sum is σ = 39110103900. Its totient is φ = 10429361032.

The previous prime is 20858722069. The next prime is 20858722097. The reversal of 20858722072 is 27022785802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303670122 + ... + 1303670137.

Almost surely, 2^20858722072 is an apocalyptic number.

It is an amenable number.

20858722072 is a deficient number, since it is larger than the sum of its proper divisors (18251381828).

20858722072 is a wasteful number, since it uses less digits than its factorization.

20858722072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607340265 (or 2607340261 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The spelling of 20858722072 in words is "twenty billion, eight hundred fifty-eight million, seven hundred twenty-two thousand, seventy-two".