91125995215 has 8 divisors (see below), whose sum is σ = 109352814480. Its totient is φ = 72899716032.

The previous prime is 91125995183. The next prime is 91125995267. The reversal of 91125995215 is 51259952119.

It is a happy number.

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 91125995215 - 2⁵ = 91125995183 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, 595707 + ... + 732883.

It is an arithmetic number, because the mean of its divisors is an integer number (13669101810).

Almost surely, 2^91125995215 is an apocalyptic number.

91125995215 is a deficient number, since it is larger than the sum of its proper divisors (18226819265).

91125995215 is a wasteful number, since it uses less digits than its factorization.

91125995215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270041.

The product of its digits is 364500, while the sum is 49.

The spelling of 91125995215 in words is "ninety-one billion, one hundred twenty-five million, nine hundred ninety-five thousand, two hundred fifteen".