91825275691 has 8 divisors (see below), whose sum is σ = 92269039104. Its totient is φ = 91381857000.

The previous prime is 91825275683. The next prime is 91825275721. The reversal of 91825275691 is 19657252819.

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 91825275691 - 2³ = 91825275683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91825075691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456066 + ... + 625816.

It is an arithmetic number, because the mean of its divisors is an integer number (11533629888).

Almost surely, 2^91825275691 is an apocalyptic number.

91825275691 is a deficient number, since it is larger than the sum of its proper divisors (443763413).

91825275691 is a wasteful number, since it uses less digits than its factorization.

91825275691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172361.

The product of its digits is 2721600, while the sum is 55.

The spelling of 91825275691 in words is "ninety-one billion, eight hundred twenty-five million, two hundred seventy-five thousand, six hundred ninety-one".