91465736231521 has 8 divisors (see below), whose sum is σ = 91540753516800. Its totient is φ = 91390741522080.

The previous prime is 91465736231509. The next prime is 91465736231587. The reversal of 91465736231521 is 12513263756419.

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 91465736231521 - 2²⁹ = 91465199360609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91465736231591) 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, 2467116 + ... + 13748386.

It is an arithmetic number, because the mean of its divisors is an integer number (11442594189600).

Almost surely, 2^{91465736231521} is an apocalyptic number.

It is an amenable number.

91465736231521 is a deficient number, since it is larger than the sum of its proper divisors (75017285279).

91465736231521 is a wasteful number, since it uses less digits than its factorization.

91465736231521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11287919.

The product of its digits is 8164800, while the sum is 55.

The spelling of 91465736231521 in words is "ninety-one trillion, four hundred sixty-five billion, seven hundred thirty-six million, two hundred thirty-one thousand, five hundred twenty-one".