91304787044 has 12 divisors (see below), whose sum is σ = 159792351600. Its totient is φ = 45649829448.

The previous prime is 91304787031. The next prime is 91304787053. The reversal of 91304787044 is 44078740319.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91304787044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559754 + ... + 704225.

It is an arithmetic number, because the mean of its divisors is an integer number (13316029300).

Almost surely, 2^91304787044 is an apocalyptic number.

It is an amenable number.

91304787044 is a deficient number, since it is larger than the sum of its proper divisors (68487564556).

91304787044 is a wasteful number, since it uses less digits than its factorization.

91304787044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282042 (or 1282040 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 91304787044 in words is "ninety-one billion, three hundred four million, seven hundred eighty-seven thousand, forty-four".