91915797322 has 8 divisors (see below), whose sum is σ = 143868204576. Its totient is φ = 43959729132.

The previous prime is 91915797287. The next prime is 91915797329. The reversal of 91915797322 is 22379751919.

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

It is not an unprimeable number, because it can be changed into a prime (91915797329) 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 3 ways as a sum of consecutive naturals, for example, 999084708 + ... + 999084799.

It is an arithmetic number, because the mean of its divisors is an integer number (17983525572).

Almost surely, 2^91915797322 is an apocalyptic number.

91915797322 is a deficient number, since it is larger than the sum of its proper divisors (51952407254).

91915797322 is a wasteful number, since it uses less digits than its factorization.

91915797322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998169532.

The product of its digits is 2143260, while the sum is 55.

The spelling of 91915797322 in words is "ninety-one billion, nine hundred fifteen million, seven hundred ninety-seven thousand, three hundred twenty-two".