91109360951 has 8 divisors (see below), whose sum is σ = 104670142464. Its totient is φ = 77684869080.

The previous prime is 91109360939. The next prime is 91109360959. The reversal of 91109360951 is 15906390119.

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

It is a de Polignac number, because none of the positive numbers 2^k-91109360951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91109360959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34070975 + ... + 34073648.

It is an arithmetic number, because the mean of its divisors is an integer number (13083767808).

Almost surely, 2^91109360951 is an apocalyptic number.

91109360951 is a deficient number, since it is larger than the sum of its proper divisors (13560781513).

91109360951 is a wasteful number, since it uses less digits than its factorization.

91109360951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68144821.

The product of its (nonzero) digits is 65610, while the sum is 44.

The spelling of 91109360951 in words is "ninety-one billion, one hundred nine million, three hundred sixty thousand, nine hundred fifty-one".