21056328750060 has 48 divisors (see below), whose sum is σ = 65508578335200. Its totient is φ = 5615020999872.

The previous prime is 21056328750059. The next prime is 21056328750071. The reversal of 21056328750060 is 6005782365012.

21056328750060 is a `hidden beast` number, since 2 + 1 + 0 + 5 + 6 + 3 + 2 + 87 + 500 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 21056328749988 and 21056328750015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19496600155 + ... + 19496601234.

It is an arithmetic number, because the mean of its divisors is an integer number (1364762048650).

Almost surely, 2^{21056328750060} is an apocalyptic number.

21056328750060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21056328750060 is an abundant number, since it is smaller than the sum of its proper divisors (44452249585140).

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

21056328750060 is a wasteful number, since it uses less digits than its factorization.

21056328750060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38993201407 (or 38993201399 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 21056328750060 in words is "twenty-one trillion, fifty-six billion, three hundred twenty-eight million, seven hundred fifty thousand, sixty".