202137564640 has 48 divisors (see below), whose sum is σ = 520963637040. Its totient is φ = 73504568320.

The previous prime is 202137564637. The next prime is 202137564647. The reversal of 202137564640 is 46465731202.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 202137564593 and 202137564602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202137564647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57423685 + ... + 57427204.

It is an arithmetic number, because the mean of its divisors is an integer number (10853409105).

Almost surely, 2^202137564640 is an apocalyptic number.

202137564640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202137564640 is an abundant number, since it is smaller than the sum of its proper divisors (318826072400).

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

202137564640 is a wasteful number, since it uses less digits than its factorization.

202137564640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114850915 (or 114850907 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 202137564640 in words is "two hundred two billion, one hundred thirty-seven million, five hundred sixty-four thousand, six hundred forty".