55205555021598 has 8 divisors (see below), whose sum is σ = 110411110043208. Its totient is φ = 18401851673864.

The previous prime is 55205555021581. The next prime is 55205555021609. The reversal of 55205555021598 is 89512055550255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

55205555021598 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600462918461 + ... + 4600462918472.

It is an arithmetic number, because the mean of its divisors is an integer number (13801388755401).

Almost surely, 2^{55205555021598} is an apocalyptic number.

55205555021598 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55205555021598 is a wasteful number, since it uses less digits than its factorization.

55205555021598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200925836938.

The product of its (nonzero) digits is 22500000, while the sum is 57.

The spelling of 55205555021598 in words is "fifty-five trillion, two hundred five billion, five hundred fifty-five million, twenty-one thousand, five hundred ninety-eight".