91083374025121 has 9 divisors (see below), whose sum is σ = 91488566054001. Its totient is φ = 90679968791412.

The previous prime is 91083374025073. The next prime is 91083374025151. The reversal of 91083374025121 is 12152047338019.

The square root of 91083374025121 is 9543761.

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

It is not a de Polignac number, because 91083374025121 - 2¹⁵ = 91083373992353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91083374025151) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2166412726 + ... + 2166454768.

Almost surely, 2^{91083374025121} is an apocalyptic number.

91083374025121 is the 9543761-st square number.

91083374025121 is the 4771881-st centered octagonal number.

It is an amenable number.

91083374025121 is a deficient number, since it is larger than the sum of its proper divisors (405192028880).

91083374025121 is an frugal number, since it uses more digits than its factorization.

91083374025121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84540 (or 42270 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 91083374025121 in words is "ninety-one trillion, eighty-three billion, three hundred seventy-four million, twenty-five thousand, one hundred twenty-one".