16407685998 has 32 divisors (see below), whose sum is σ = 39776209920. Its totient is φ = 4972025880.

The previous prime is 16407685979. The next prime is 16407686011. The reversal of 16407685998 is 89958670461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13810590 + ... + 13811777.

It is an arithmetic number, because the mean of its divisors is an integer number (1243006560).

Almost surely, 2^16407685998 is an apocalyptic number.

16407685998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16407685998 is an abundant number, since it is smaller than the sum of its proper divisors (23368523922).

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

16407685998 is a wasteful number, since it uses less digits than its factorization.

16407685998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27622389 (or 27622383 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 16407685998 in words is "sixteen billion, four hundred seven million, six hundred eighty-five thousand, nine hundred ninety-eight".