16661679488 has 32 divisors (see below), whose sum is σ = 34337790000. Its totient is φ = 8043567616.

The previous prime is 16661679439. The next prime is 16661679499. The reversal of 16661679488 is 88497616661.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×16661679488² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16661679488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240588 + ... + 2248011.

Almost surely, 2^16661679488 is an apocalyptic number.

It is an amenable number.

16661679488 is an abundant number, since it is smaller than the sum of its proper divisors (17676110512).

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

16661679488 is an equidigital number, since it uses as much as digits as its factorization.

16661679488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488642 (or 4488630 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The spelling of 16661679488 in words is "sixteen billion, six hundred sixty-one million, six hundred seventy-nine thousand, four hundred eighty-eight".