91859797043 has 8 divisors (see below), whose sum is σ = 105453401088. Its totient is φ = 78383886984.

The previous prime is 91859797027. The next prime is 91859797063. The reversal of 91859797043 is 34079795819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91859797043 - 2⁴ = 91859797027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91859797063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29421821 + ... + 29424942.

It is an arithmetic number, because the mean of its divisors is an integer number (13181675136).

Almost surely, 2^91859797043 is an apocalyptic number.

91859797043 is a deficient number, since it is larger than the sum of its proper divisors (13593604045).

91859797043 is a wasteful number, since it uses less digits than its factorization.

91859797043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58846993.

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 91859797043 in words is "ninety-one billion, eight hundred fifty-nine million, seven hundred ninety-seven thousand, forty-three".