16720447220460 has 96 divisors (see below), whose sum is σ = 53125960043520. Its totient is φ = 4363918133184.

The previous prime is 16720447220453. The next prime is 16720447220483. The reversal of 16720447220460 is 6402274402761.

16720447220460 is a `hidden beast` number, since 1 + 67 + 2 + 0 + 44 + 72 + 20 + 460 = 666.

It is a super-2 number, since 2×16720447220460² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329376654 + ... + 329427413.

It is an arithmetic number, because the mean of its divisors is an integer number (553395417120).

Almost surely, 2^{16720447220460} is an apocalyptic number.

16720447220460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16720447220460 is an abundant number, since it is smaller than the sum of its proper divisors (36405512823060).

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

16720447220460 is a wasteful number, since it uses less digits than its factorization.

16720447220460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658804132 (or 658804124 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 16720447220460 in words is "sixteen trillion, seven hundred twenty billion, four hundred forty-seven million, two hundred twenty thousand, four hundred sixty".