91145254758496 has 24 divisors (see below), whose sum is σ = 180015518154024. Its totient is φ = 45427027925760.

The previous prime is 91145254758479. The next prime is 91145254758533. The reversal of 91145254758496 is 69485745254119.

It is a happy number.

It is a super-2 number, since 2×91145254758496² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549972750 + ... + 4549992781.

It is an arithmetic number, because the mean of its divisors is an integer number (7500646589751).

Almost surely, 2^{91145254758496} is an apocalyptic number.

It is an amenable number.

91145254758496 is a deficient number, since it is larger than the sum of its proper divisors (88870263395528).

91145254758496 is a wasteful number, since it uses less digits than its factorization.

91145254758496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9099965854 (or 9099965846 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 70.

The spelling of 91145254758496 in words is "ninety-one trillion, one hundred forty-five billion, two hundred fifty-four million, seven hundred fifty-eight thousand, four hundred ninety-six".