91543324697664 has 112 divisors (see below), whose sum is σ = 276811999543296. Its totient is φ = 26155006732800.

The previous prime is 91543324697653. The next prime is 91543324697681. The reversal of 91543324697664 is 46679642334519.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206904199 + ... + 207346169.

It is an arithmetic number, because the mean of its divisors is an integer number (2471535710208).

Almost surely, 2^{91543324697664} is an apocalyptic number.

It is an amenable number.

91543324697664 is an abundant number, since it is smaller than the sum of its proper divisors (185268674845632).

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

91543324697664 is a wasteful number, since it uses less digits than its factorization.

91543324697664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596104 (or 596094 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 69.

The spelling of 91543324697664 in words is "ninety-one trillion, five hundred forty-three billion, three hundred twenty-four million, six hundred ninety-seven thousand, six hundred sixty-four".