91759166687 has 8 divisors (see below), whose sum is σ = 94491152976. Its totient is φ = 89054364672.

The previous prime is 91759166683. The next prime is 91759166729. The reversal of 91759166687 is 78666195719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91759166687 - 2² = 91759166683 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 (91759166683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6789218 + ... + 6802719.

It is an arithmetic number, because the mean of its divisors is an integer number (11811394122).

Almost surely, 2^91759166687 is an apocalyptic number.

91759166687 is a deficient number, since it is larger than the sum of its proper divisors (2731986289).

91759166687 is a wasteful number, since it uses less digits than its factorization.

91759166687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13592137.

The product of its digits is 34292160, while the sum is 65.

The spelling of 91759166687 in words is "ninety-one billion, seven hundred fifty-nine million, one hundred sixty-six thousand, six hundred eighty-seven".