203155141155 has 32 divisors (see below), whose sum is σ = 336325089600. Its totient is φ = 104591972352.

The previous prime is 203155141151. The next prime is 203155141171. The reversal of 203155141155 is 551141551302.

It is a happy number.

It is not a de Polignac number, because 203155141155 - 2² = 203155141151 is a prime.

It is a super-2 number, since 2×203155141155² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203155141151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2221087 + ... + 2310743.

It is an arithmetic number, because the mean of its divisors is an integer number (10510159050).

Almost surely, 2^203155141155 is an apocalyptic number.

203155141155 is a deficient number, since it is larger than the sum of its proper divisors (133169948445).

203155141155 is a wasteful number, since it uses less digits than its factorization.

203155141155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94903.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 203155141155 its reverse (551141551302), we get a palindrome (754296692457).

The spelling of 203155141155 in words is "two hundred three billion, one hundred fifty-five million, one hundred forty-one thousand, one hundred fifty-five".