91187519094607 has 6 divisors (see below), whose sum is σ = 98741514759432. Its totient is φ = 84173094548712.

The previous prime is 91187519094571. The next prime is 91187519094613. The reversal of 91187519094607 is 70649091578119.

It is not a de Polignac number, because 91187519094607 - 2¹⁵ = 91187519061839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91187519094647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269785559283 + ... + 269785559620.

It is an arithmetic number, because the mean of its divisors is an integer number (16456919126572).

Almost surely, 2^{91187519094607} is an apocalyptic number.

91187519094607 is a deficient number, since it is larger than the sum of its proper divisors (7553995664825).

91187519094607 is a wasteful number, since it uses less digits than its factorization.

91187519094607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539571118929 (or 539571118916 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 67.

The spelling of 91187519094607 in words is "ninety-one trillion, one hundred eighty-seven billion, five hundred nineteen million, ninety-four thousand, six hundred seven".