20159957860 has 48 divisors (see below), whose sum is σ = 48996380160. Its totient is φ = 6824488320.

The previous prime is 20159957833. The next prime is 20159957863. The reversal of 20159957860 is 6875995102.

It is a junction number, because it is equal to n+sod(n) for n = 20159957798 and 20159957807.

It is not an unprimeable number, because it can be changed into a prime (20159957863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900331 + ... + 922450.

It is an arithmetic number, because the mean of its divisors is an integer number (1020757920).

Almost surely, 2^20159957860 is an apocalyptic number.

20159957860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20159957860 is an abundant number, since it is smaller than the sum of its proper divisors (28836422300).

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

20159957860 is a wasteful number, since it uses less digits than its factorization.

20159957860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822876 (or 1822874 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 20159957860 in words is "twenty billion, one hundred fifty-nine million, nine hundred fifty-seven thousand, eight hundred sixty".