115605221470987 has 2 divisors, whose sum is σ = 115605221470988. Its totient is φ = 115605221470986.

The previous prime is 115605221470979. The next prime is 115605221471017. The reversal of 115605221470987 is 789074122506511.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (789074122506511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115605221470987 - 2³ = 115605221470979 is a prime.

It is not a weakly prime, because it can be changed into another prime (115605221470087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57802610735493 + 57802610735494.

It is an arithmetic number, because the mean of its divisors is an integer number (57802610735494).

Almost surely, 2^{115605221470987} is an apocalyptic number.

115605221470987 is a deficient number, since it is larger than the sum of its proper divisors (1).

115605221470987 is an equidigital number, since it uses as much as digits as its factorization.

115605221470987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 115605221470987 in words is "one hundred fifteen trillion, six hundred five billion, two hundred twenty-one million, four hundred seventy thousand, nine hundred eighty-seven".