91671344351 has 2 divisors, whose sum is σ = 91671344352. Its totient is φ = 91671344350.

The previous prime is 91671344321. The next prime is 91671344383. The reversal of 91671344351 is 15344317619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91671344351 - 2²⁶ = 91604235487 is a prime.

It is a super-2 number, since 2×91671344351² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91671344311) 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, 45835672175 + 45835672176.

It is an arithmetic number, because the mean of its divisors is an integer number (45835672176).

Almost surely, 2^91671344351 is an apocalyptic number.

91671344351 is a deficient number, since it is larger than the sum of its proper divisors (1).

91671344351 is an equidigital number, since it uses as much as digits as its factorization.

91671344351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The spelling of 91671344351 in words is "ninety-one billion, six hundred seventy-one million, three hundred forty-four thousand, three hundred fifty-one".