116146390581 has 36 divisors (see below), whose sum is σ = 182189225088. Its totient is φ = 71268399072.

The previous prime is 116146390571. The next prime is 116146390609. The reversal of 116146390581 is 185093641611.

116146390581 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 4 + 63 + 9 + 0 + 581 = 666.

It is not a de Polignac number, because 116146390581 - 2¹⁵ = 116146357813 is a prime.

It is a super-2 number, since 2×116146390581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116146390501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 417756 + ... + 637818.

It is an arithmetic number, because the mean of its divisors is an integer number (5060811808).

Almost surely, 2^116146390581 is an apocalyptic number.

It is an amenable number.

116146390581 is a deficient number, since it is larger than the sum of its proper divisors (66042834507).

116146390581 is a wasteful number, since it uses less digits than its factorization.

116146390581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220442 (or 220426 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 116146390581 in words is "one hundred sixteen billion, one hundred forty-six million, three hundred ninety thousand, five hundred eighty-one".