116642042505 has 24 divisors (see below), whose sum is σ = 202190860872. Its totient is φ = 62205606144.

The previous prime is 116642042453. The next prime is 116642042521. The reversal of 116642042505 is 505240246611.

116642042505 is a `hidden beast` number, since 1 + 1 + 6 + 642 + 0 + 4 + 2 + 5 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30896147529 + 85745894976 = 175773^2 + 292824^2 .

It is not a de Polignac number, because 116642042505 - 2²⁶ = 116574933641 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 116642042505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 876427 + ... + 1000703.

It is an arithmetic number, because the mean of its divisors is an integer number (8424619203).

Almost surely, 2^116642042505 is an apocalyptic number.

116642042505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116642042505 is a deficient number, since it is larger than the sum of its proper divisors (85548818367).

116642042505 is a wasteful number, since it uses less digits than its factorization.

116642042505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145145 (or 145142 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 116642042505 in words is "one hundred sixteen billion, six hundred forty-two million, forty-two thousand, five hundred five".