21502433025514 has 12 divisors (see below), whose sum is σ = 37519551503874. Its totient is φ = 9215328439464.

The previous prime is 21502433025457. The next prime is 21502433025539. The reversal of 21502433025514 is 41552033420512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14890761911025 + 6611671114489 = 3858855^2 + 2571317^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109706290849 + ... + 109706291044.

Almost surely, 2^{21502433025514} is an apocalyptic number.

21502433025514 is a deficient number, since it is larger than the sum of its proper divisors (16017118478360).

21502433025514 is a wasteful number, since it uses less digits than its factorization.

21502433025514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219412581909 (or 219412581902 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 21502433025514 in words is "twenty-one trillion, five hundred two billion, four hundred thirty-three million, twenty-five thousand, five hundred fourteen".