116161605 has 72 divisors (see below), whose sum is σ = 236527200. Its totient is φ = 52581312.

The previous prime is 116161601. The next prime is 116161657. The reversal of 116161605 is 506161611.

It is not a de Polignac number, because 116161605 - 2² = 116161601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116161601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 306306 + ... + 306684.

It is an arithmetic number, because the mean of its divisors is an integer number (3285100).

Almost surely, 2^116161605 is an apocalyptic number.

116161605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116161605 is an abundant number, since it is smaller than the sum of its proper divisors (120365595).

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

116161605 is a wasteful number, since it uses less digits than its factorization.

116161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 116161605 is about 10777.8293269099. The cubic root of 116161605 is about 487.9262701586.

It can be divided in two parts, 11 and 6161605, that added together give a palindrome (6161616).

The spelling of 116161605 in words is "one hundred sixteen million, one hundred sixty-one thousand, six hundred five".