115917907487 has 2 divisors, whose sum is σ = 115917907488. Its totient is φ = 115917907486.

The previous prime is 115917907453. The next prime is 115917907499. The reversal of 115917907487 is 784709719511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115917907487 - 2¹⁰ = 115917906463 is a prime.

It is a super-2 number, since 2×115917907487² (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 (115917907087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57958953743 + 57958953744.

It is an arithmetic number, because the mean of its divisors is an integer number (57958953744).

Almost surely, 2^115917907487 is an apocalyptic number.

115917907487 is a deficient number, since it is larger than the sum of its proper divisors (1).

115917907487 is an equidigital number, since it uses as much as digits as its factorization.

115917907487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4445280, while the sum is 59.

The spelling of 115917907487 in words is "one hundred fifteen billion, nine hundred seventeen million, nine hundred seven thousand, four hundred eighty-seven".