91530672784 has 40 divisors (see below), whose sum is σ = 183904803000. Its totient is φ = 44079092736.

The previous prime is 91530672773. The next prime is 91530672797. The reversal of 91530672784 is 48727603519.

It can be written as a sum of positive squares in 4 ways, for example, as 17590186384 + 73940486400 = 132628^2 + 271920^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51379 + ... + 430930.

It is an arithmetic number, because the mean of its divisors is an integer number (4597620075).

It is a 1-persistent number, because it is pandigital, but 2⋅91530672784 = 183061345568 is not.

Almost surely, 2^91530672784 is an apocalyptic number.

It is an amenable number.

91530672784 is an abundant number, since it is smaller than the sum of its proper divisors (92374130216).

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

91530672784 is a wasteful number, since it uses less digits than its factorization.

91530672784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482755 (or 482749 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 91530672784 in words is "ninety-one billion, five hundred thirty million, six hundred seventy-two thousand, seven hundred eighty-four".