23137944228 has 144 divisors (see below), whose sum is σ = 68910360064. Its totient is φ = 6407735040.

The previous prime is 23137944227. The next prime is 23137944233. The reversal of 23137944228 is 82244973132.

23137944228 is a `hidden beast` number, since 2 + 3 + 137 + 94 + 422 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (23137944227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2522226 + ... + 2531382.

Almost surely, 2^23137944228 is an apocalyptic number.

23137944228 is a gapful number since it is divisible by the number (28) 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 23137944228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34455180032).

23137944228 is an abundant number, since it is smaller than the sum of its proper divisors (45772415836).

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

23137944228 is a wasteful number, since it uses less digits than its factorization.

23137944228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482 (or 9477 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 23137944228 in words is "twenty-three billion, one hundred thirty-seven million, nine hundred forty-four thousand, two hundred twenty-eight".