21163155616324 has 24 divisors (see below), whose sum is σ = 39000499392960. Its totient is φ = 10020605476896.

The previous prime is 21163155616277. The next prime is 21163155616333. The reversal of 21163155616324 is 42361655136112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56021392 + ... + 56397895.

It is an arithmetic number, because the mean of its divisors is an integer number (1625020808040).

Almost surely, 2^{21163155616324} is an apocalyptic number.

It is an amenable number.

21163155616324 is a deficient number, since it is larger than the sum of its proper divisors (17837343776636).

21163155616324 is a wasteful number, since it uses less digits than its factorization.

21163155616324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112421787 (or 112421785 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 21163155616324 in words is "twenty-one trillion, one hundred sixty-three billion, one hundred fifty-five million, six hundred sixteen thousand, three hundred twenty-four".