91312085344 has 12 divisors (see below), whose sum is σ = 179770668084. Its totient is φ = 45656042656.

The previous prime is 91312085321. The next prime is 91312085377. The reversal of 91312085344 is 44358021319.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 91312085297 and 91312085306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1426751302 + ... + 1426751365.

It is an arithmetic number, because the mean of its divisors is an integer number (14980889007).

Almost surely, 2^91312085344 is an apocalyptic number.

It is an amenable number.

91312085344 is a deficient number, since it is larger than the sum of its proper divisors (88458582740).

91312085344 is a wasteful number, since it uses less digits than its factorization.

91312085344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853502677 (or 2853502669 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 91312085344 in words is "ninety-one billion, three hundred twelve million, eighty-five thousand, three hundred forty-four".