91259317060 has 12 divisors (see below), whose sum is σ = 191644565868. Its totient is φ = 36503726816.

The previous prime is 91259317043. The next prime is 91259317081. The reversal of 91259317060 is 6071395219.

It can be written as a sum of positive squares in 2 ways, for example, as 27987951616 + 63271365444 = 167296^2 + 251538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91259316998 and 91259317016.

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, 2281482907 + ... + 2281482946.

It is an arithmetic number, because the mean of its divisors is an integer number (15970380489).

Almost surely, 2^91259317060 is an apocalyptic number.

It is an amenable number.

91259317060 is an abundant number, since it is smaller than the sum of its proper divisors (100385248808).

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

91259317060 is a wasteful number, since it uses less digits than its factorization.

91259317060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562965862 (or 4562965860 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 91259317060 in words is "ninety-one billion, two hundred fifty-nine million, three hundred seventeen thousand, sixty".