115720516277 has 4 divisors (see below), whose sum is σ = 118848097836. Its totient is φ = 112592934720.

The previous prime is 115720516273. The next prime is 115720516319. The reversal of 115720516277 is 772615027511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 772615027511 = 27437 ⋅28159603.

It can be written as a sum of positive squares in 2 ways, for example, as 92848793521 + 22871722756 = 304711^2 + 151234^2 .

It is a cyclic number.

It is not a de Polignac number, because 115720516277 - 2² = 115720516273 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 (115720516273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1563790724 + ... + 1563790797.

It is an arithmetic number, because the mean of its divisors is an integer number (29712024459).

Almost surely, 2^115720516277 is an apocalyptic number.

It is an amenable number.

115720516277 is a deficient number, since it is larger than the sum of its proper divisors (3127581559).

115720516277 is an equidigital number, since it uses as much as digits as its factorization.

115720516277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127581558.

The product of its (nonzero) digits is 205800, while the sum is 44.

The spelling of 115720516277 in words is "one hundred fifteen billion, seven hundred twenty million, five hundred sixteen thousand, two hundred seventy-seven".