91000016834 has 32 divisors (see below), whose sum is σ = 141820568064. Its totient is φ = 43745984640.

The previous prime is 91000016831. The next prime is 91000016897. The reversal of 91000016834 is 43861000019.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91000016834.

It is not an unprimeable number, because it can be changed into a prime (91000016831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22340222 + ... + 22344294.

It is an arithmetic number, because the mean of its divisors is an integer number (4431892752).

Almost surely, 2^91000016834 is an apocalyptic number.

91000016834 is a deficient number, since it is larger than the sum of its proper divisors (50820551230).

91000016834 is a wasteful number, since it uses less digits than its factorization.

91000016834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6362.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 91000016834 in words is "ninety-one billion, sixteen thousand, eight hundred thirty-four".