116561065405 has 16 divisors (see below), whose sum is σ = 146364095664. Its totient is φ = 89016744960.

The previous prime is 116561065381. The next prime is 116561065409. The reversal of 116561065405 is 504560165611.

It can be written as a sum of positive squares in 8 ways, for example, as 19275712569 + 97285352836 = 138837^2 + 311906^2 .

It is not a de Polignac number, because 116561065405 - 2⁵ = 116561065373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116561065409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5934156 + ... + 5953765.

It is an arithmetic number, because the mean of its divisors is an integer number (9147755979).

Almost surely, 2^116561065405 is an apocalyptic number.

It is an amenable number.

116561065405 is a deficient number, since it is larger than the sum of its proper divisors (29803030259).

116561065405 is a wasteful number, since it uses less digits than its factorization.

116561065405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11888016.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 116561065405 in words is "one hundred sixteen billion, five hundred sixty-one million, sixty-five thousand, four hundred five".