16997409408 has 64 divisors (see below), whose sum is σ = 51599286720. Its totient is φ = 4856401920.

The previous prime is 16997409383. The next prime is 16997409409. The reversal of 16997409408 is 80490479961.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16997409409) 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, 3159033 + ... + 3164408.

It is an arithmetic number, because the mean of its divisors is an integer number (806238855).

Almost surely, 2^16997409408 is an apocalyptic number.

It is an amenable number.

16997409408 is an abundant number, since it is smaller than the sum of its proper divisors (34601877312).

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

16997409408 is an equidigital number, since it uses as much as digits as its factorization.

16997409408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323465 (or 6323453 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 16997409408 in words is "sixteen billion, nine hundred ninety-seven million, four hundred nine thousand, four hundred eight".