20958101560 has 32 divisors (see below), whose sum is σ = 51442614000. Its totient is φ = 7621127680.

The previous prime is 20958101533. The next prime is 20958101581. The reversal of 20958101560 is 6510185902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23815585 + ... + 23816464.

Almost surely, 2^20958101560 is an apocalyptic number.

20958101560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20958101560 is an abundant number, since it is smaller than the sum of its proper divisors (30484512440).

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

20958101560 is a wasteful number, since it uses less digits than its factorization.

20958101560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47632071 (or 47632067 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 20958101560 in words is "twenty billion, nine hundred fifty-eight million, one hundred one thousand, five hundred sixty".