20372162580 has 864 divisors, whose sum is σ = 82958803200. Its totient is φ = 4191264000.

The previous prime is 20372162563. The next prime is 20372162581. The reversal of 20372162580 is 8526127302.

20372162580 is a `hidden beast` number, since 2 + 0 + 3 + 7 + 21 + 625 + 8 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372162581) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 201704530 + ... + 201704630.

Almost surely, 2^20372162580 is an apocalyptic number.

20372162580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372162580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41479401600).

20372162580 is an abundant number, since it is smaller than the sum of its proper divisors (62586640620).

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

20372162580 is a wasteful number, since it uses less digits than its factorization.

20372162580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 20372162580 its reverse (8526127302), we get a palindrome (28898289882).

The spelling of 20372162580 in words is "twenty billion, three hundred seventy-two million, one hundred sixty-two thousand, five hundred eighty".