203155505255206 has 24 divisors (see below), whose sum is σ = 362729478303720. Its totient is φ = 85041839407392.

The previous prime is 203155505255123. The next prime is 203155505255257. The reversal of 203155505255206 is 602552505551302.

It is a happy number.

203155505255206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24104825551 + ... + 24104833978.

It is an arithmetic number, because the mean of its divisors is an integer number (15113728262655).

Almost surely, 2^{203155505255206} is an apocalyptic number.

203155505255206 is a deficient number, since it is larger than the sum of its proper divisors (159573973048514).

203155505255206 is a wasteful number, since it uses less digits than its factorization.

203155505255206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48209659588 (or 48209659581 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 46.

The spelling of 203155505255206 in words is "two hundred three trillion, one hundred fifty-five billion, five hundred five million, two hundred fifty-five thousand, two hundred six".