91271558876 has 12 divisors (see below), whose sum is σ = 169120829808. Its totient is φ = 42951321792.

The previous prime is 91271558839. The next prime is 91271558879. The reversal of 91271558876 is 67885517219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91271558879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671114336 + ... + 671114471.

It is an arithmetic number, because the mean of its divisors is an integer number (14093402484).

Almost surely, 2^91271558876 is an apocalyptic number.

It is an amenable number.

91271558876 is a deficient number, since it is larger than the sum of its proper divisors (77849270932).

91271558876 is a wasteful number, since it uses less digits than its factorization.

91271558876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342228828 (or 1342228826 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 59.

The spelling of 91271558876 in words is "ninety-one billion, two hundred seventy-one million, five hundred fifty-eight thousand, eight hundred seventy-six".