91777426327 has 2 divisors, whose sum is σ = 91777426328. Its totient is φ = 91777426326.

The previous prime is 91777426313. The next prime is 91777426337. The reversal of 91777426327 is 72362477719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91777426327 - 2⁷ = 91777426199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91777426337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45888713163 + 45888713164.

It is an arithmetic number, because the mean of its divisors is an integer number (45888713164).

Almost surely, 2^91777426327 is an apocalyptic number.

91777426327 is a deficient number, since it is larger than the sum of its proper divisors (1).

91777426327 is an equidigital number, since it uses as much as digits as its factorization.

91777426327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6223392, while the sum is 55.

The spelling of 91777426327 in words is "ninety-one billion, seven hundred seventy-seven million, four hundred twenty-six thousand, three hundred twenty-seven".