115111666100087 has 2 divisors, whose sum is σ = 115111666100088. Its totient is φ = 115111666100086.

The previous prime is 115111666099951. The next prime is 115111666100131. The reversal of 115111666100087 is 780001666111511.

It is an a-pointer prime, because the next prime (115111666100131) can be obtained adding 115111666100087 to its sum of digits (44).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115111666100087 - 2¹² = 115111666095991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115111666100887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57555833050043 + 57555833050044.

It is an arithmetic number, because the mean of its divisors is an integer number (57555833050044).

Almost surely, 2^{115111666100087} is an apocalyptic number.

115111666100087 is a deficient number, since it is larger than the sum of its proper divisors (1).

115111666100087 is an equidigital number, since it uses as much as digits as its factorization.

115111666100087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 44.

The spelling of 115111666100087 in words is "one hundred fifteen trillion, one hundred eleven billion, six hundred sixty-six million, one hundred thousand, eighty-seven".