55509453998 has 8 divisors (see below), whose sum is σ = 83265251160. Its totient is φ = 27754370280.

The previous prime is 55509453959. The next prime is 55509454027. The reversal of 55509453998 is 89935490555.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55509453998.

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, 108293 + ... + 350351.

It is an arithmetic number, because the mean of its divisors is an integer number (10408156395).

Almost surely, 2^55509453998 is an apocalyptic number.

55509453998 is a deficient number, since it is larger than the sum of its proper divisors (27755797162).

55509453998 is a wasteful number, since it uses less digits than its factorization.

55509453998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356722.

The product of its (nonzero) digits is 43740000, while the sum is 62.

The spelling of 55509453998 in words is "fifty-five billion, five hundred nine million, four hundred fifty-three thousand, nine hundred ninety-eight".