21030714510056 has 16 divisors (see below), whose sum is σ = 40176600833700. Its totient is φ = 10316954287744.

The previous prime is 21030714510041. The next prime is 21030714510139. The reversal of 21030714510056 is 65001541703012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20424705196900 + 606009313156 = 4519370^2 + 778466^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21030714509998 and 21030714510025.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24800370461 + ... + 24800371308.

Almost surely, 2^{21030714510056} is an apocalyptic number.

It is an amenable number.

21030714510056 is a deficient number, since it is larger than the sum of its proper divisors (19145886323644).

21030714510056 is a wasteful number, since it uses less digits than its factorization.

21030714510056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49600741828 (or 49600741824 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 21030714510056 in words is "twenty-one trillion, thirty billion, seven hundred fourteen million, five hundred ten thousand, fifty-six".