20512342560 has 96 divisors (see below), whose sum is σ = 64653785280. Its totient is φ = 5466579968.

The previous prime is 20512342559. The next prime is 20512342573. The reversal of 20512342560 is 6524321502.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819511 + ... + 844169.

It is an arithmetic number, because the mean of its divisors is an integer number (673476930).

Almost surely, 2^20512342560 is an apocalyptic number.

20512342560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20512342560 is an abundant number, since it is smaller than the sum of its proper divisors (44141442720).

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

20512342560 is a wasteful number, since it uses less digits than its factorization.

20512342560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26410 (or 26402 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 20512342560 in words is "twenty billion, five hundred twelve million, three hundred forty-two thousand, five hundred sixty".