91734507427 has 2 divisors, whose sum is σ = 91734507428. Its totient is φ = 91734507426.

The previous prime is 91734507413. The next prime is 91734507479. The reversal of 91734507427 is 72470543719.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91734507427 - 2¹⁵ = 91734474659 is a prime.

It is not a weakly prime, because it can be changed into another prime (91734507127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45867253713 + 45867253714.

It is an arithmetic number, because the mean of its divisors is an integer number (45867253714).

Almost surely, 2^91734507427 is an apocalyptic number.

91734507427 is a deficient number, since it is larger than the sum of its proper divisors (1).

91734507427 is an equidigital number, since it uses as much as digits as its factorization.

91734507427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 91734507427 in words is "ninety-one billion, seven hundred thirty-four million, five hundred seven thousand, four hundred twenty-seven".