91120667044 has 27 divisors (see below), whose sum is σ = 175288273153. Its totient is φ = 41415466400.

The previous prime is 91120667023. The next prime is 91120667051. The reversal of 91120667044 is 44076602119.

The square root of 91120667044 is 301862.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 19082107044 + 72038560000 = 138138^2 + 268400^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91120666988 and 91120667006.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6634104 + ... + 6647824.

Almost surely, 2^91120667044 is an apocalyptic number.

91120667044 is the 301862-nd square number.

It is an amenable number.

91120667044 is a deficient number, since it is larger than the sum of its proper divisors (84167606109).

91120667044 is an equidigital number, since it uses as much as digits as its factorization.

91120667044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27468 (or 13734 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 91120667044 in words is "ninety-one billion, one hundred twenty million, six hundred sixty-seven thousand, forty-four".