55891396198 has 16 divisors (see below), whose sum is σ = 91567687680. Its totient is φ = 25374891400.

The previous prime is 55891396159. The next prime is 55891396207. The reversal of 55891396198 is 89169319855.

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, 1495558 + ... + 1532473.

It is an arithmetic number, because the mean of its divisors is an integer number (5722980480).

Almost surely, 2^55891396198 is an apocalyptic number.

55891396198 is a deficient number, since it is larger than the sum of its proper divisors (35676291482).

55891396198 is a wasteful number, since it uses less digits than its factorization.

55891396198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028883.

The product of its digits is 20995200, while the sum is 64.

The spelling of 55891396198 in words is "fifty-five billion, eight hundred ninety-one million, three hundred ninety-six thousand, one hundred ninety-eight".