20858501152 has 24 divisors (see below), whose sum is σ = 43480773756. Its totient is φ = 9815764992.

The previous prime is 20858501149. The next prime is 20858501177. The reversal of 20858501152 is 25110585802.

It can be written as a sum of positive squares in 2 ways, for example, as 19927274896 + 931226256 = 141164^2 + 30516^2 .

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, 19170873 + ... + 19171960.

Almost surely, 2^20858501152 is an apocalyptic number.

It is an amenable number.

20858501152 is an abundant number, since it is smaller than the sum of its proper divisors (22622272604).

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

20858501152 is a wasteful number, since it uses less digits than its factorization.

20858501152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38342860 (or 38342852 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 37.

The spelling of 20858501152 in words is "twenty billion, eight hundred fifty-eight million, five hundred one thousand, one hundred fifty-two".