20757502160 has 20 divisors (see below), whose sum is σ = 48261192708. Its totient is φ = 8303000832.

The previous prime is 20757502079. The next prime is 20757502169. The reversal of 20757502160 is 6120575702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16104625216 + 4652876944 = 126904^2 + 68212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 20757502160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20757502169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129734309 + ... + 129734468.

Almost surely, 2^20757502160 is an apocalyptic number.

20757502160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20757502160 is an abundant number, since it is smaller than the sum of its proper divisors (27503690548).

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

20757502160 is a wasteful number, since it uses less digits than its factorization.

20757502160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259468790 (or 259468784 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 20757502160 in words is "twenty billion, seven hundred fifty-seven million, five hundred two thousand, one hundred sixty".