20372181102 has 512 divisors, whose sum is σ = 61662720000. Its totient is φ = 4938071040.

The previous prime is 20372181101. The next prime is 20372181113. The reversal of 20372181102 is 20118127302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372181101) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 279070938 + ... + 279071010.

It is an arithmetic number, because the mean of its divisors is an integer number (120435000).

Almost surely, 2^20372181102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372181102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30831360000).

20372181102 is an abundant number, since it is smaller than the sum of its proper divisors (41290538898).

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

20372181102 is a wasteful number, since it uses less digits than its factorization.

20372181102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 20372181102 in words is "twenty billion, three hundred seventy-two million, one hundred eighty-one thousand, one hundred two".