91831466534 has 16 divisors (see below), whose sum is σ = 143752479840. Its totient is φ = 43914425280.

The previous prime is 91831466521. The next prime is 91831466561. The reversal of 91831466534 is 43566413819.

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, 315224 + ... + 532004.

It is an arithmetic number, because the mean of its divisors is an integer number (8984529990).

Almost surely, 2^91831466534 is an apocalyptic number.

91831466534 is a deficient number, since it is larger than the sum of its proper divisors (51921013306).

91831466534 is a wasteful number, since it uses less digits than its factorization.

91831466534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226015.

The product of its digits is 1866240, while the sum is 50.

The spelling of 91831466534 in words is "ninety-one billion, eight hundred thirty-one million, four hundred sixty-six thousand, five hundred thirty-four".