115517954077 has 2 divisors, whose sum is σ = 115517954078. Its totient is φ = 115517954076.

The previous prime is 115517954051. The next prime is 115517954081. The reversal of 115517954077 is 770459715511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114013600281 + 1504353796 = 337659^2 + 38786^2 .

It is a cyclic number.

It is not a de Polignac number, because 115517954077 - 2¹¹ = 115517952029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115517954087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57758977038 + 57758977039.

It is an arithmetic number, because the mean of its divisors is an integer number (57758977039).

Almost surely, 2^115517954077 is an apocalyptic number.

It is an amenable number.

115517954077 is a deficient number, since it is larger than the sum of its proper divisors (1).

115517954077 is an equidigital number, since it uses as much as digits as its factorization.

115517954077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1543500, while the sum is 52.

The spelling of 115517954077 in words is "one hundred fifteen billion, five hundred seventeen million, nine hundred fifty-four thousand, seventy-seven".