91332540390 has 128 divisors (see below), whose sum is σ = 283981501440. Its totient is φ = 18255932928.

The previous prime is 91332540373. The next prime is 91332540401. The reversal of 91332540390 is 9304523319.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 828529 + ... + 932268.

It is an arithmetic number, because the mean of its divisors is an integer number (2218605480).

Almost surely, 2^91332540390 is an apocalyptic number.

91332540390 is an abundant number, since it is smaller than the sum of its proper divisors (192648961050).

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

91332540390 is a wasteful number, since it uses less digits than its factorization.

91332540390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760846.

The product of its (nonzero) digits is 87480, while the sum is 39.

The spelling of 91332540390 in words is "ninety-one billion, three hundred thirty-two million, five hundred forty thousand, three hundred ninety".