21246752048556 has 48 divisors (see below), whose sum is σ = 51739115551200. Its totient is φ = 6777521544192.

The previous prime is 21246752048537. The next prime is 21246752048579. The reversal of 21246752048556 is 65584025764212.

It is a super-2 number, since 2×21246752048556² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21246752048496 and 21246752048505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270110611 + ... + 270189258.

It is an arithmetic number, because the mean of its divisors is an integer number (1077898240650).

Almost surely, 2^{21246752048556} is an apocalyptic number.

It is an amenable number.

21246752048556 is an abundant number, since it is smaller than the sum of its proper divisors (30492363502644).

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

21246752048556 is a wasteful number, since it uses less digits than its factorization.

21246752048556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540300018 (or 540300016 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 57.

The spelling of 21246752048556 in words is "twenty-one trillion, two hundred forty-six billion, seven hundred fifty-two million, forty-eight thousand, five hundred fifty-six".