91358618260 has 144 divisors (see below), whose sum is σ = 237697358976. Its totient is φ = 28880257536.

The previous prime is 91358618257. The next prime is 91358618279. The reversal of 91358618260 is 6281685319.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28082794 + ... + 28086046.

It is an arithmetic number, because the mean of its divisors is an integer number (1650676104).

Almost surely, 2^91358618260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91358618260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118848679488).

91358618260 is an abundant number, since it is smaller than the sum of its proper divisors (146338740716).

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

91358618260 is a wasteful number, since it uses less digits than its factorization.

91358618260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 91358618260 in words is "ninety-one billion, three hundred fifty-eight million, six hundred eighteen thousand, two hundred sixty".