115477707308521 has 2 divisors, whose sum is σ = 115477707308522. Its totient is φ = 115477707308520.

The previous prime is 115477707308507. The next prime is 115477707308627. The reversal of 115477707308521 is 125803707774511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103932417825625 + 11545289482896 = 10194725^2 + 3397836^2 .

It is a cyclic number.

It is not a de Polignac number, because 115477707308521 - 2⁹ = 115477707308009 is a prime.

It is not a weakly prime, because it can be changed into another prime (115477707708521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57738853654260 + 57738853654261.

It is an arithmetic number, because the mean of its divisors is an integer number (57738853654261).

Almost surely, 2^{115477707308521} is an apocalyptic number.

It is an amenable number.

115477707308521 is a deficient number, since it is larger than the sum of its proper divisors (1).

115477707308521 is an equidigital number, since it uses as much as digits as its factorization.

115477707308521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11524800, while the sum is 58.

The spelling of 115477707308521 in words is "one hundred fifteen trillion, four hundred seventy-seven billion, seven hundred seven million, three hundred eight thousand, five hundred twenty-one".