203140106021155 has 16 divisors (see below), whose sum is σ = 243792981734400. Its totient is φ = 162495516145248.

The previous prime is 203140106021003. The next prime is 203140106021179. The reversal of 203140106021155 is 551120601041302.

It is a cyclic number.

It is not a de Polignac number, because 203140106021155 - 2²³ = 203140097632547 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, 2558432146 + ... + 2558511544.

It is an arithmetic number, because the mean of its divisors is an integer number (15237061358400).

Almost surely, 2^{203140106021155} is an apocalyptic number.

203140106021155 is a deficient number, since it is larger than the sum of its proper divisors (40652875713245).

203140106021155 is a wasteful number, since it uses less digits than its factorization.

203140106021155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125130.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 203140106021155 its reverse (551120601041302), we get a palindrome (754260707062457).

The spelling of 203140106021155 in words is "two hundred three trillion, one hundred forty billion, one hundred six million, twenty-one thousand, one hundred fifty-five".