91858964279 has 8 divisors (see below), whose sum is σ = 97328132928. Its totient is φ = 86397095680.

The previous prime is 91858964257. The next prime is 91858964311. The reversal of 91858964279 is 97246985819.

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

It is a cyclic number.

It is not a de Polignac number, because 91858964279 - 2³² = 87563996983 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 (91858964179) 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, 1799087 + ... + 1849440.

It is an arithmetic number, because the mean of its divisors is an integer number (12166016616).

Almost surely, 2^91858964279 is an apocalyptic number.

91858964279 is a deficient number, since it is larger than the sum of its proper divisors (5469168649).

91858964279 is a wasteful number, since it uses less digits than its factorization.

91858964279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650025.

The product of its digits is 78382080, while the sum is 68.

The spelling of 91858964279 in words is "ninety-one billion, eight hundred fifty-eight million, nine hundred sixty-four thousand, two hundred seventy-nine".