91464551027 has 2 divisors, whose sum is σ = 91464551028. Its totient is φ = 91464551026.

The previous prime is 91464550999. The next prime is 91464551047. The reversal of 91464551027 is 72015546419.

It is a strong prime.

It is an emirp because it is prime and its reverse (72015546419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91464551027 - 2¹² = 91464546931 is a prime.

It is not a weakly prime, because it can be changed into another prime (91464551047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45732275513 + 45732275514.

It is an arithmetic number, because the mean of its divisors is an integer number (45732275514).

Almost surely, 2^91464551027 is an apocalyptic number.

91464551027 is a deficient number, since it is larger than the sum of its proper divisors (1).

91464551027 is an equidigital number, since it uses as much as digits as its factorization.

91464551027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 91464551027 in words is "ninety-one billion, four hundred sixty-four million, five hundred fifty-one thousand, twenty-seven".