16998657996 has 12 divisors (see below), whose sum is σ = 39663535352. Its totient is φ = 5666219328.

The previous prime is 16998657979. The next prime is 16998658013. The reversal of 16998657996 is 69975689961.

It is an interprime number because it is at equal distance from previous prime (16998657979) and next prime (16998658013).

It is a tau number, because it is divible by the number of its divisors (12).

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, 708277405 + ... + 708277428.

Almost surely, 2^16998657996 is an apocalyptic number.

It is an amenable number.

16998657996 is an abundant number, since it is smaller than the sum of its proper divisors (22664877356).

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

16998657996 is a wasteful number, since it uses less digits than its factorization.

16998657996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416554840 (or 1416554838 counting only the distinct ones).

The product of its digits is 396809280, while the sum is 75.

The spelling of 16998657996 in words is "sixteen billion, nine hundred ninety-eight million, six hundred fifty-seven thousand, nine hundred ninety-six".