155013115103203 has 16 divisors (see below), whose sum is σ = 185393099727360. Its totient is φ = 126725240131776.

The previous prime is 155013115103183. The next prime is 155013115103207. The reversal of 155013115103203 is 302301511310551.

It is a cyclic number.

It is not a de Polignac number, because 155013115103203 - 2²¹ = 155013113006051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155013115103207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1387284738 + ... + 1387396471.

It is an arithmetic number, because the mean of its divisors is an integer number (11587068732960).

Almost surely, 2^{155013115103203} is an apocalyptic number.

155013115103203 is a deficient number, since it is larger than the sum of its proper divisors (30379984624157).

155013115103203 is a wasteful number, since it uses less digits than its factorization.

155013115103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774681586.

The product of its (nonzero) digits is 6750, while the sum is 31.

Adding to 155013115103203 its reverse (302301511310551), we get a palindrome (457314626413754).

The spelling of 155013115103203 in words is "one hundred fifty-five trillion, thirteen billion, one hundred fifteen million, one hundred three thousand, two hundred three".