91319425815 has 8 divisors (see below), whose sum is σ = 146111081328. Its totient is φ = 48703693760.

The previous prime is 91319425789. The next prime is 91319425843. The reversal of 91319425815 is 51852491319.

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

It is not a de Polignac number, because 91319425815 - 2⁵ = 91319425783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3043980846 + ... + 3043980875.

It is an arithmetic number, because the mean of its divisors is an integer number (18263885166).

Almost surely, 2^91319425815 is an apocalyptic number.

91319425815 is a deficient number, since it is larger than the sum of its proper divisors (54791655513).

91319425815 is a wasteful number, since it uses less digits than its factorization.

91319425815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087961729.

The product of its digits is 388800, while the sum is 48.

The spelling of 91319425815 in words is "ninety-one billion, three hundred nineteen million, four hundred twenty-five thousand, eight hundred fifteen".