91636415127 has 12 divisors (see below), whose sum is σ = 137266070760. Its totient is φ = 61090943256.

The previous prime is 91636415111. The next prime is 91636415141. The reversal of 91636415127 is 72151463619.

91636415127 is a `hidden beast` number, since 9 + 1 + 636 + 4 + 1 + 5 + 1 + 2 + 7 = 666.

It is not a de Polignac number, because 91636415127 - 2⁴ = 91636415111 is a prime.

It is a super-2 number, since 2×91636415127² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91636415027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188552052 + ... + 188552537.

It is an arithmetic number, because the mean of its divisors is an integer number (11438839230).

Almost surely, 2^91636415127 is an apocalyptic number.

91636415127 is a deficient number, since it is larger than the sum of its proper divisors (45629655633).

91636415127 is an equidigital number, since it uses as much as digits as its factorization.

91636415127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377104604 (or 377104592 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 91636415127 in words is "ninety-one billion, six hundred thirty-six million, four hundred fifteen thousand, one hundred twenty-seven".