91444210414 has 4 divisors (see below), whose sum is σ = 137166315624. Its totient is φ = 45722105206.

The previous prime is 91444210397. The next prime is 91444210421. The reversal of 91444210414 is 41401244419.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91444210414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22861052602 + ... + 22861052605.

It is an arithmetic number, because the mean of its divisors is an integer number (34291578906).

Almost surely, 2^91444210414 is an apocalyptic number.

91444210414 is a deficient number, since it is larger than the sum of its proper divisors (45722105210).

91444210414 is a wasteful number, since it uses less digits than its factorization.

91444210414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45722105209.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 91444210414 in words is "ninety-one billion, four hundred forty-four million, two hundred ten thousand, four hundred fourteen".