91514373689 has 2 divisors, whose sum is σ = 91514373690. Its totient is φ = 91514373688.

The previous prime is 91514373683. The next prime is 91514373697. The reversal of 91514373689 is 98637341519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46006818064 + 45507555625 = 214492^2 + 213325^2 .

It is an emirp because it is prime and its reverse (98637341519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91514373689 - 2²⁴ = 91497596473 is a prime.

It is not a weakly prime, because it can be changed into another prime (91514373683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45757186844 + 45757186845.

It is an arithmetic number, because the mean of its divisors is an integer number (45757186845).

Almost surely, 2^91514373689 is an apocalyptic number.

It is an amenable number.

91514373689 is a deficient number, since it is larger than the sum of its proper divisors (1).

91514373689 is an equidigital number, since it uses as much as digits as its factorization.

91514373689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The spelling of 91514373689 in words is "ninety-one billion, five hundred fourteen million, three hundred seventy-three thousand, six hundred eighty-nine".