115516420277 has 2 divisors, whose sum is σ = 115516420278. Its totient is φ = 115516420276.

The previous prime is 115516420241. The next prime is 115516420321. The reversal of 115516420277 is 772024615511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113915700196 + 1600720081 = 337514^2 + 40009^2 .

It is a cyclic number.

It is not a de Polignac number, because 115516420277 - 2²⁸ = 115247984821 is a prime.

It is a super-2 number, since 2×115516420277² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115516420177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57758210138 + 57758210139.

It is an arithmetic number, because the mean of its divisors is an integer number (57758210139).

Almost surely, 2^115516420277 is an apocalyptic number.

It is an amenable number.

115516420277 is a deficient number, since it is larger than the sum of its proper divisors (1).

115516420277 is an equidigital number, since it uses as much as digits as its factorization.

115516420277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 115516420277 in words is "one hundred fifteen billion, five hundred sixteen million, four hundred twenty thousand, two hundred seventy-seven".