91738273312 has 24 divisors (see below), whose sum is σ = 206411115456. Its totient is φ = 39316402752.

The previous prime is 91738273261. The next prime is 91738273339. The reversal of 91738273312 is 21337283719.

It is a happy number.

It is a super-2 number, since 2×91738273312² (a number of 23 digits) contains 22 as substring.

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, 204772708 + ... + 204773155.

It is an arithmetic number, because the mean of its divisors is an integer number (8600463144).

Almost surely, 2^91738273312 is an apocalyptic number.

It is an amenable number.

91738273312 is an abundant number, since it is smaller than the sum of its proper divisors (114672842144).

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

91738273312 is a wasteful number, since it uses less digits than its factorization.

91738273312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409545880 (or 409545872 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The spelling of 91738273312 in words is "ninety-one billion, seven hundred thirty-eight million, two hundred seventy-three thousand, three hundred twelve".