115121453917 has 2 divisors, whose sum is σ = 115121453918. Its totient is φ = 115121453916.

The previous prime is 115121453861. The next prime is 115121453921. The reversal of 115121453917 is 719354121511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98790147481 + 16331306436 = 314309^2 + 127794^2 .

It is a cyclic number.

It is not a de Polignac number, because 115121453917 - 2¹¹ = 115121451869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115121453917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115121451917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57560726958 + 57560726959.

It is an arithmetic number, because the mean of its divisors is an integer number (57560726959).

Almost surely, 2^115121453917 is an apocalyptic number.

It is an amenable number.

115121453917 is a deficient number, since it is larger than the sum of its proper divisors (1).

115121453917 is an equidigital number, since it uses as much as digits as its factorization.

115121453917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 40.

The spelling of 115121453917 in words is "one hundred fifteen billion, one hundred twenty-one million, four hundred fifty-three thousand, nine hundred seventeen".