91588355040 has 384 divisors, whose sum is σ = 355589885952. Its totient is φ = 19296460800.

The previous prime is 91588355029. The next prime is 91588355057. The reversal of 91588355040 is 4055388519.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48178090 + ... + 48179990.

It is an arithmetic number, because the mean of its divisors is an integer number (926015328).

Almost surely, 2^91588355040 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 91588355040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177794942976).

91588355040 is an abundant number, since it is smaller than the sum of its proper divisors (264001530912).

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

91588355040 is a wasteful number, since it uses less digits than its factorization.

91588355040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 91588355040 in words is "ninety-one billion, five hundred eighty-eight million, three hundred fifty-five thousand, forty".