20372315586 has 64 divisors (see below), whose sum is σ = 47746492416. Its totient is φ = 5673283200.

The previous prime is 20372315543. The next prime is 20372315609. The reversal of 20372315586 is 68551327302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2011411 + ... + 2021513.

It is an arithmetic number, because the mean of its divisors is an integer number (746038944).

Almost surely, 2^20372315586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372315586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23873246208).

20372315586 is an abundant number, since it is smaller than the sum of its proper divisors (27374176830).

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

20372315586 is a wasteful number, since it uses less digits than its factorization.

20372315586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11327.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 20372315586 in words is "twenty billion, three hundred seventy-two million, three hundred fifteen thousand, five hundred eighty-six".