20115550256460 has 96 divisors (see below), whose sum is σ = 57166810525440. Its totient is φ = 5283842665728.

The previous prime is 20115550256447. The next prime is 20115550256513. The reversal of 20115550256460 is 6465205551102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98061922 + ... + 98266838.

It is an arithmetic number, because the mean of its divisors is an integer number (595487609640).

Almost surely, 2^{20115550256460} is an apocalyptic number.

20115550256460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20115550256460 is an abundant number, since it is smaller than the sum of its proper divisors (37051260268980).

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

20115550256460 is a wasteful number, since it uses less digits than its factorization.

20115550256460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229415 (or 229413 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 20115550256460 in words is "twenty trillion, one hundred fifteen billion, five hundred fifty million, two hundred fifty-six thousand, four hundred sixty".