20372355536 has 40 divisors (see below), whose sum is σ = 43142176224. Its totient is φ = 9262281600.

The previous prime is 20372355533. The next prime is 20372355559. The reversal of 20372355536 is 63555327302.

It is a junction number, because it is equal to n+sod(n) for n = 20372355493 and 20372355502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372355533) 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, 716990 + ... + 744861.

Almost surely, 2^20372355536 is an apocalyptic number.

20372355536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20372355536 is an abundant number, since it is smaller than the sum of its proper divisors (22769820688).

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

20372355536 is a wasteful number, since it uses less digits than its factorization.

20372355536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461939 (or 1461933 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 41.

The spelling of 20372355536 in words is "twenty billion, three hundred seventy-two million, three hundred fifty-five thousand, five hundred thirty-six".