2103812505155 has 8 divisors (see below), whose sum is σ = 2540063197392. Its totient is φ = 1672724543328.

The previous prime is 2103812505149. The next prime is 2103812505227. The reversal of 2103812505155 is 5515052183012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2103812505155 - 2²⁴ = 2103795727939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290681704 + ... + 1290683333.

It is an arithmetic number, because the mean of its divisors is an integer number (317507899674).

Almost surely, 2^{2103812505155} is an apocalyptic number.

2103812505155 is a deficient number, since it is larger than the sum of its proper divisors (436250692237).

2103812505155 is a wasteful number, since it uses less digits than its factorization.

2103812505155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581365205.

The product of its (nonzero) digits is 60000, while the sum is 38.

Adding to 2103812505155 its reverse (5515052183012), we get a palindrome (7618864688167).

The spelling of 2103812505155 in words is "two trillion, one hundred three billion, eight hundred twelve million, five hundred five thousand, one hundred fifty-five".