20357244132 has 12 divisors (see below), whose sum is σ = 47500236336. Its totient is φ = 6785748040.

The previous prime is 20357244113. The next prime is 20357244143. The reversal of 20357244132 is 23144275302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 20357244093 and 20357244102.

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, 848218494 + ... + 848218517.

It is an arithmetic number, because the mean of its divisors is an integer number (3958353028).

Almost surely, 2^20357244132 is an apocalyptic number.

It is an amenable number.

20357244132 is an abundant number, since it is smaller than the sum of its proper divisors (27142992204).

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

20357244132 is a wasteful number, since it uses less digits than its factorization.

20357244132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696437018 (or 1696437016 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 20357244132 in words is "twenty billion, three hundred fifty-seven million, two hundred forty-four thousand, one hundred thirty-two".