55204221421155 has 16 divisors (see below), whose sum is σ = 88770607315200. Its totient is φ = 29294300410848.

The previous prime is 55204221421121. The next prime is 55204221421163. The reversal of 55204221421155 is 55112412240255.

It is not a de Polignac number, because 55204221421155 - 2⁹ = 55204221420643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9246935277 + ... + 9246941246.

It is an arithmetic number, because the mean of its divisors is an integer number (5548162957200).

Almost surely, 2^{55204221421155} is an apocalyptic number.

55204221421155 is a deficient number, since it is larger than the sum of its proper divisors (33566385894045).

55204221421155 is a wasteful number, since it uses less digits than its factorization.

55204221421155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493876730.

The product of its (nonzero) digits is 160000, while the sum is 39.

The spelling of 55204221421155 in words is "fifty-five trillion, two hundred four billion, two hundred twenty-one million, four hundred twenty-one thousand, one hundred fifty-five".