91536905549287 has 24 divisors (see below), whose sum is σ = 104642297748800. Its totient is φ = 79941414421440.

The previous prime is 91536905549279. The next prime is 91536905549303. The reversal of 91536905549287 is 78294550963519.

It is not a de Polignac number, because 91536905549287 - 2³ = 91536905549279 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 (91536905549207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129051612 + ... + 129758977.

It is a 1-persistent number, because it is pandigital, but 2⋅91536905549287 = 183073811098574 is not.

Almost surely, 2^{91536905549287} is an apocalyptic number.

91536905549287 is a deficient number, since it is larger than the sum of its proper divisors (13105392199513).

91536905549287 is a wasteful number, since it uses less digits than its factorization.

91536905549287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258810727 (or 258810716 counting only the distinct ones).

The product of its (nonzero) digits is 734832000, while the sum is 73.

The spelling of 91536905549287 in words is "ninety-one trillion, five hundred thirty-six billion, nine hundred five million, five hundred forty-nine thousand, two hundred eighty-seven".