115551116566605 has 12 divisors (see below), whose sum is σ = 200288602048860. Its totient is φ = 61627262168832.

The previous prime is 115551116566579. The next prime is 115551116566609. The reversal of 115551116566605 is 506665611155511.

It can be written as a sum of positive squares in 2 ways, for example, as 68871093897321 + 46680022669284 = 8298861^2 + 6832278^2 .

It is not a de Polignac number, because 115551116566605 - 2¹³ = 115551116558413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115551116566609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1283901295140 + ... + 1283901295229.

It is an arithmetic number, because the mean of its divisors is an integer number (16690716837405).

Almost surely, 2^{115551116566605} is an apocalyptic number.

115551116566605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115551116566605 is a deficient number, since it is larger than the sum of its proper divisors (84737485482255).

115551116566605 is a wasteful number, since it uses less digits than its factorization.

115551116566605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567802590380 (or 2567802590377 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 54.

The spelling of 115551116566605 in words is "one hundred fifteen trillion, five hundred fifty-one billion, one hundred sixteen million, five hundred sixty-six thousand, six hundred five".