20932591760 has 40 divisors (see below), whose sum is σ = 48682404216. Its totient is φ = 8370606080.

The previous prime is 20932591723. The next prime is 20932591763. The reversal of 20932591760 is 6719523902.

It is a Cunningham number, because it is equal to 144681²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 709476496 + 20223115264 = 26636^2 + 142208^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20932591763) 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, 253190 + ... + 325530.

Almost surely, 2^20932591760 is an apocalyptic number.

20932591760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20932591760 is an abundant number, since it is smaller than the sum of its proper divisors (27749812456).

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

20932591760 is a wasteful number, since it uses less digits than its factorization.

20932591760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75971 (or 75965 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 20932591760 in words is "twenty billion, nine hundred thirty-two million, five hundred ninety-one thousand, seven hundred sixty".