91530672782 has 16 divisors (see below), whose sum is σ = 137511455760. Its totient is φ = 45693558528.

The previous prime is 91530672773. The next prime is 91530672797. The reversal of 91530672782 is 28727603519.

It is a self number, because there is not a number n which added to its sum of digits gives 91530672782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6574673 + ... + 6588579.

It is an arithmetic number, because the mean of its divisors is an integer number (8594465985).

Almost surely, 2^91530672782 is an apocalyptic number.

91530672782 is a deficient number, since it is larger than the sum of its proper divisors (45980782978).

91530672782 is a wasteful number, since it uses less digits than its factorization.

91530672782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18835.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 91530672782 in words is "ninety-one billion, five hundred thirty million, six hundred seventy-two thousand, seven hundred eighty-two".