91801701671 has 8 divisors (see below), whose sum is σ = 97571560320. Its totient is φ = 86125662072.

The previous prime is 91801701653. The next prime is 91801701689. The reversal of 91801701671 is 17610710819.

It is an interprime number because it is at equal distance from previous prime (91801701653) and next prime (91801701689).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91801701671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91801701601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23452745 + ... + 23456658.

It is an arithmetic number, because the mean of its divisors is an integer number (12196445040).

Almost surely, 2^91801701671 is an apocalyptic number.

91801701671 is a deficient number, since it is larger than the sum of its proper divisors (5769858649).

91801701671 is a wasteful number, since it uses less digits than its factorization.

91801701671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46909525.

The product of its (nonzero) digits is 21168, while the sum is 41.

The spelling of 91801701671 in words is "ninety-one billion, eight hundred one million, seven hundred one thousand, six hundred seventy-one".