21402215494148 has 12 divisors (see below), whose sum is σ = 37454064028752. Its totient is φ = 10701054343080.

The previous prime is 21402215494139. The next prime is 21402215494181. The reversal of 21402215494148 is 84149451220412.

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 3 ways as a sum of consecutive naturals, for example, 12442418 + ... + 14057673.

It is an arithmetic number, because the mean of its divisors is an integer number (3121172002396).

Almost surely, 2^{21402215494148} is an apocalyptic number.

It is an amenable number.

21402215494148 is a deficient number, since it is larger than the sum of its proper divisors (16051848534604).

21402215494148 is a wasteful number, since it uses less digits than its factorization.

21402215494148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26702002 (or 26702000 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 21402215494148 in words is "twenty-one trillion, four hundred two billion, two hundred fifteen million, four hundred ninety-four thousand, one hundred forty-eight".