91543960894 has 16 divisors (see below), whose sum is σ = 140968981440. Its totient is φ = 44559123840.

The previous prime is 91543960867. The next prime is 91543960901. The reversal of 91543960894 is 49806934519.

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, 1167639 + ... + 1243570.

It is an arithmetic number, because the mean of its divisors is an integer number (8810561340).

Almost surely, 2^91543960894 is an apocalyptic number.

91543960894 is a deficient number, since it is larger than the sum of its proper divisors (49425020546).

91543960894 is a wasteful number, since it uses less digits than its factorization.

91543960894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411715.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 91543960894 in words is "ninety-one billion, five hundred forty-three million, nine hundred sixty thousand, eight hundred ninety-four".