91465736231587 has 2 divisors, whose sum is σ = 91465736231588. Its totient is φ = 91465736231586.

The previous prime is 91465736231509. The next prime is 91465736231591. The reversal of 91465736231587 is 78513263756419.

It is a strong prime.

It is an emirp because it is prime and its reverse (78513263756419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91465736231587 - 2⁷ = 91465736231459 is a prime.

It is not a weakly prime, because it can be changed into another prime (91465736232587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45732868115793 + 45732868115794.

It is an arithmetic number, because the mean of its divisors is an integer number (45732868115794).

Almost surely, 2^{91465736231587} is an apocalyptic number.

91465736231587 is a deficient number, since it is larger than the sum of its proper divisors (1).

91465736231587 is an equidigital number, since it uses as much as digits as its factorization.

91465736231587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 228614400, while the sum is 67.

The spelling of 91465736231587 in words is "ninety-one trillion, four hundred sixty-five billion, seven hundred thirty-six million, two hundred thirty-one thousand, five hundred eighty-seven".