16599969488 has 40 divisors (see below), whose sum is σ = 33148750368. Its totient is φ = 8047043712.

The previous prime is 16599969487. The next prime is 16599969493. The reversal of 16599969488 is 88496999561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (74).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16599969487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117995 + ... + 217077.

Almost surely, 2^16599969488 is an apocalyptic number.

It is an amenable number.

16599969488 is a deficient number, since it is larger than the sum of its proper divisors (16548780880).

16599969488 is a wasteful number, since it uses less digits than its factorization.

16599969488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99411 (or 99405 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 74.

The spelling of 16599969488 in words is "sixteen billion, five hundred ninety-nine million, nine hundred sixty-nine thousand, four hundred eighty-eight".