20537159112 has 36 divisors (see below), whose sum is σ = 55624766145. Its totient is φ = 6845314368.

The previous prime is 20537159107. The next prime is 20537159119. The reversal of 20537159112 is 21195173502.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

20537159112 is a `hidden beast` number, since 2 + 0 + 53 + 7 + 1 + 591 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13986846756 + 6550312356 = 118266^2 + 80934^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101334.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20537159119) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1207564 + ... + 1224452.

Almost surely, 2^20537159112 is an apocalyptic number.

It is an amenable number.

20537159112 is an abundant number, since it is smaller than the sum of its proper divisors (35087607033).

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

20537159112 is an frugal number, since it uses more digits than its factorization.

20537159112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33790 (or 16894 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The spelling of 20537159112 in words is "twenty billion, five hundred thirty-seven million, one hundred fifty-nine thousand, one hundred twelve".