91078458379 has 8 divisors (see below), whose sum is σ = 95243668992. Its totient is φ = 86930354280.

The previous prime is 91078458301. The next prime is 91078458391. The reversal of 91078458379 is 97385487019.

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-91078458379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91078452379) 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 in 7 ways as a sum of consecutive naturals, for example, 4265737 + ... + 4287034.

It is an arithmetic number, because the mean of its divisors is an integer number (11905458624).

Almost surely, 2^91078458379 is an apocalyptic number.

91078458379 is a deficient number, since it is larger than the sum of its proper divisors (4165210613).

91078458379 is a wasteful number, since it uses less digits than its factorization.

91078458379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8553257.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 91078458379 in words is "ninety-one billion, seventy-eight million, four hundred fifty-eight thousand, three hundred seventy-nine".