55543867197 has 16 divisors (see below), whose sum is σ = 91148910720. Its totient is φ = 29297863872.

The previous prime is 55543867133. The next prime is 55543867207. The reversal of 55543867197 is 79176834555.

It is not a de Polignac number, because 55543867197 - 2⁶ = 55543867133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55543867197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55543867097) 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, 101728422 + ... + 101728967.

It is an arithmetic number, because the mean of its divisors is an integer number (5696806920).

Almost surely, 2^55543867197 is an apocalyptic number.

It is an amenable number.

55543867197 is a deficient number, since it is larger than the sum of its proper divisors (35605043523).

55543867197 is a wasteful number, since it uses less digits than its factorization.

55543867197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203457412.

The product of its digits is 31752000, while the sum is 60.

The spelling of 55543867197 in words is "fifty-five billion, five hundred forty-three million, eight hundred sixty-seven thousand, one hundred ninety-seven".