91740213866256 has 80 divisors (see below), whose sum is σ = 238393611207360. Its totient is φ = 30399782801920.

The previous prime is 91740213866237. The next prime is 91740213866281. The reversal of 91740213866256 is 65266831204719.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91740213866256.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26017366 + ... + 29332298.

It is an arithmetic number, because the mean of its divisors is an integer number (2979920140092).

It is a 1-persistent number, because it is pandigital, but 2⋅91740213866256 = 183480427732512 is not.

Almost surely, 2^{91740213866256} is an apocalyptic number.

It is an amenable number.

91740213866256 is an abundant number, since it is smaller than the sum of its proper divisors (146653397341104).

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

91740213866256 is a wasteful number, since it uses less digits than its factorization.

91740213866256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318344 (or 3318338 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 91740213866256 in words is "ninety-one trillion, seven hundred forty billion, two hundred thirteen million, eight hundred sixty-six thousand, two hundred fifty-six".