21027306720324 has 48 divisors (see below), whose sum is σ = 49418232953600. Its totient is φ = 6958460061216.

The previous prime is 21027306720317. The next prime is 21027306720367. The reversal of 21027306720324 is 42302760372012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58579707 + ... + 58937565.

Almost surely, 2^{21027306720324} is an apocalyptic number.

It is an amenable number.

21027306720324 is an abundant number, since it is smaller than the sum of its proper divisors (28390926233276).

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

21027306720324 is a wasteful number, since it uses less digits than its factorization.

21027306720324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393232 (or 393230 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 39.

The spelling of 21027306720324 in words is "twenty-one trillion, twenty-seven billion, three hundred six million, seven hundred twenty thousand, three hundred twenty-four".