16161605115 has 16 divisors (see below), whose sum is σ = 25961596416. Its totient is φ = 8585180000.

The previous prime is 16161605107. The next prime is 16161605179. The reversal of 16161605115 is 51150616161.

It is not a de Polignac number, because 16161605115 - 2³ = 16161605107 is a prime.

It is a super-2 number, since 2×16161605115² (a number of 21 digits) contains 22 as substring.

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, 2142531 + ... + 2150060.

It is an arithmetic number, because the mean of its divisors is an integer number (1622599776).

Almost surely, 2^16161605115 is an apocalyptic number.

16161605115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16161605115 is a deficient number, since it is larger than the sum of its proper divisors (9799991301).

16161605115 is a wasteful number, since it uses less digits than its factorization.

16161605115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292850.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 16161605115 in words is "sixteen billion, one hundred sixty-one million, six hundred five thousand, one hundred fifteen".