16721202464 has 48 divisors (see below), whose sum is σ = 33395957280. Its totient is φ = 8239864320.

The previous prime is 16721202427. The next prime is 16721202521. The reversal of 16721202464 is 46420212761.

It is a happy number.

It is a super-2 number, since 2×16721202464² (a number of 21 digits) contains 22 as substring.

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, 5537147 + ... + 5540165.

It is an arithmetic number, because the mean of its divisors is an integer number (695749110).

Almost surely, 2^16721202464 is an apocalyptic number.

It is an amenable number.

16721202464 is a deficient number, since it is larger than the sum of its proper divisors (16674754816).

16721202464 is a wasteful number, since it uses less digits than its factorization.

16721202464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473 (or 5465 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 16721202464 in words is "sixteen billion, seven hundred twenty-one million, two hundred two thousand, four hundred sixty-four".