20856501152 has 24 divisors (see below), whose sum is σ = 41070750336. Its totient is φ = 10425834432.

The previous prime is 20856501139. The next prime is 20856501163. The reversal of 20856501152 is 25110565802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69023 + ... + 215585.

It is an arithmetic number, because the mean of its divisors is an integer number (1711281264).

Almost surely, 2^20856501152 is an apocalyptic number.

It is an amenable number.

20856501152 is a deficient number, since it is larger than the sum of its proper divisors (20214249184).

20856501152 is a wasteful number, since it uses less digits than its factorization.

20856501152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151020 (or 151012 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 35.

It can be divided in two parts, 2085650 and 1152, that added together give a palindrome (2086802).

The spelling of 20856501152 in words is "twenty billion, eight hundred fifty-six million, five hundred one thousand, one hundred fifty-two".