91315761659 has 8 divisors (see below), whose sum is σ = 93560857488. Its totient is φ = 89071517440.

The previous prime is 91315761619. The next prime is 91315761697. The reversal of 91315761659 is 95616751319.

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 91315761659 - 2¹⁶ = 91315696123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91315761659.

It is not an unprimeable number, because it can be changed into a prime (91315761619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6944 + ... + 427410.

It is an arithmetic number, because the mean of its divisors is an integer number (11695107186).

Almost surely, 2^91315761659 is an apocalyptic number.

91315761659 is a deficient number, since it is larger than the sum of its proper divisors (2245095829).

91315761659 is a wasteful number, since it uses less digits than its factorization.

91315761659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425805.

The product of its digits is 1530900, while the sum is 53.

The spelling of 91315761659 in words is "ninety-one billion, three hundred fifteen million, seven hundred sixty-one thousand, six hundred fifty-nine".