16661479488 has 56 divisors (see below), whose sum is σ = 44806209600. Its totient is φ = 5462776320.

The previous prime is 16661479469. The next prime is 16661479517. The reversal of 16661479488 is 88497416661.

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, 699588 + ... + 723011.

Almost surely, 2^16661479488 is an apocalyptic number.

It is an amenable number.

16661479488 is an abundant number, since it is smaller than the sum of its proper divisors (28144730112).

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

16661479488 is a wasteful number, since it uses less digits than its factorization.

16661479488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422675 (or 1422665 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The spelling of 16661479488 in words is "sixteen billion, six hundred sixty-one million, four hundred seventy-nine thousand, four hundred eighty-eight".