91243807360 has 32 divisors (see below), whose sum is σ = 218129728500. Its totient is φ = 36497522688.

The previous prime is 91243807327. The next prime is 91243807367. The reversal of 91243807360 is 6370834219.

It can be written as a sum of positive squares in 2 ways, for example, as 90187297344 + 1056510016 = 300312^2 + 32504^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (91243807367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71283585 + ... + 71284864.

Almost surely, 2^91243807360 is an apocalyptic number.

It is an amenable number.

91243807360 is an abundant number, since it is smaller than the sum of its proper divisors (126885921140).

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

91243807360 is a wasteful number, since it uses less digits than its factorization.

91243807360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142568468 (or 142568456 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 91243807360 in words is "ninety-one billion, two hundred forty-three million, eight hundred seven thousand, three hundred sixty".