73844426785285 has 32 divisors (see below), whose sum is σ = 95857369423200. Its totient is φ = 54287423382528.

The previous prime is 73844426785139. The next prime is 73844426785361. The reversal of 73844426785285 is 58258762444837.

It is a Cunningham number, because it is equal to 8593278²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 67364418701889 + 6480008083396 = 8207583^2 + 2545586^2 .

It is a cyclic number.

It is not a de Polignac number, because 73844426785285 - 2²⁷ = 73844292567557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10770391 + ... + 16238539.

It is an arithmetic number, because the mean of its divisors is an integer number (2995542794475).

Almost surely, 2^{73844426785285} is an apocalyptic number.

It is an amenable number.

73844426785285 is a deficient number, since it is larger than the sum of its proper divisors (22012942637915).

73844426785285 is a wasteful number, since it uses less digits than its factorization.

73844426785285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469097.

The product of its digits is 2890137600, while the sum is 73.

The spelling of 73844426785285 in words is "seventy-three trillion, eight hundred forty-four billion, four hundred twenty-six million, seven hundred eighty-five thousand, two hundred eighty-five".