55538186598 has 16 divisors (see below), whose sum is σ = 123418192560. Its totient is φ = 18512728848.

The previous prime is 55538186593. The next prime is 55538186603. The reversal of 55538186598 is 89568183555.

55538186598 is a `hidden beast` number, since 5 + 5 + 5 + 38 + 1 + 8 + 6 + 598 = 666.

It is an interprime number because it is at equal distance from previous prime (55538186593) and next prime (55538186603).

It is a super-4 number, since 4×55538186598⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55538186591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514242415 + ... + 514242522.

It is an arithmetic number, because the mean of its divisors is an integer number (7713637035).

Almost surely, 2^55538186598 is an apocalyptic number.

55538186598 is an abundant number, since it is smaller than the sum of its proper divisors (67880005962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55538186598 is a wasteful number, since it uses less digits than its factorization.

55538186598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028484948 (or 1028484942 counting only the distinct ones).

The product of its digits is 51840000, while the sum is 63.

The spelling of 55538186598 in words is "fifty-five billion, five hundred thirty-eight million, one hundred eighty-six thousand, five hundred ninety-eight".