16991396395 has 32 divisors (see below), whose sum is σ = 21600391680. Its totient is φ = 12805309440.

The previous prime is 16991396381. The next prime is 16991396407. The reversal of 16991396395 is 59369319961.

It is not a de Polignac number, because 16991396395 - 2⁵ = 16991396363 is a prime.

It is a super-3 number, since 3×16991396395³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2350096 + ... + 2357314.

It is an arithmetic number, because the mean of its divisors is an integer number (675012240).

Almost surely, 2^16991396395 is an apocalyptic number.

16991396395 is a deficient number, since it is larger than the sum of its proper divisors (4608995285).

16991396395 is a wasteful number, since it uses less digits than its factorization.

16991396395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7555.

The product of its digits is 10628820, while the sum is 61.

The spelling of 16991396395 in words is "sixteen billion, nine hundred ninety-one million, three hundred ninety-six thousand, three hundred ninety-five".