55500018803 has 2 divisors, whose sum is σ = 55500018804. Its totient is φ = 55500018802.

The previous prime is 55500018751. The next prime is 55500018839. The reversal of 55500018803 is 30881000555.

55500018803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55500018803 - 2¹² = 55500014707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55500018853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750009401 + 27750009402.

It is an arithmetic number, because the mean of its divisors is an integer number (27750009402).

Almost surely, 2^55500018803 is an apocalyptic number.

55500018803 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500018803 is an equidigital number, since it uses as much as digits as its factorization.

55500018803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 55500018803 in words is "fifty-five billion, five hundred million, eighteen thousand, eight hundred three".