203804801055 has 24 divisors (see below), whose sum is σ = 366345422352. Its totient is φ = 108695893248.

The previous prime is 203804801021. The next prime is 203804801119. The reversal of 203804801055 is 550108408302.

It is a happy number.

It is not a de Polignac number, because 203804801055 - 2⁸ = 203804800799 is a prime.

It is a super-2 number, since 2×203804801055² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83869074 + ... + 83871503.

It is an arithmetic number, because the mean of its divisors is an integer number (15264392598).

Almost surely, 2^203804801055 is an apocalyptic number.

203804801055 is a deficient number, since it is larger than the sum of its proper divisors (162540621297).

203804801055 is an equidigital number, since it uses as much as digits as its factorization.

203804801055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167740597 (or 167740585 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 203804801055 in words is "two hundred three billion, eight hundred four million, eight hundred one thousand, fifty-five".