91092045744 has 320 divisors, whose sum is σ = 330158868480. Its totient is φ = 23430021120.

The previous prime is 91092045677. The next prime is 91092045799. The reversal of 91092045744 is 44754029019.

It is a self number, because there is not a number n which added to its sum of digits gives 91092045744.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1143864 + ... + 1220904.

It is an arithmetic number, because the mean of its divisors is an integer number (1031746464).

Almost surely, 2^91092045744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91092045744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165079434240).

91092045744 is an abundant number, since it is smaller than the sum of its proper divisors (239066822736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91092045744 is a wasteful number, since it uses less digits than its factorization.

91092045744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77105 (or 77093 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 91092045744 in words is "ninety-one billion, ninety-two million, forty-five thousand, seven hundred forty-four".