55431716198 has 16 divisors (see below), whose sum is σ = 85184852256. Its totient is φ = 27036912960.

The previous prime is 55431716189. The next prime is 55431716201. The reversal of 55431716198 is 89161713455.

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, 848615 + ... + 911597.

It is an arithmetic number, because the mean of its divisors is an integer number (5324053266).

Almost surely, 2^55431716198 is an apocalyptic number.

55431716198 is a deficient number, since it is larger than the sum of its proper divisors (29753136058).

55431716198 is a wasteful number, since it uses less digits than its factorization.

55431716198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73759.

The product of its digits is 907200, while the sum is 50.

The spelling of 55431716198 in words is "fifty-five billion, four hundred thirty-one million, seven hundred sixteen thousand, one hundred ninety-eight".