155043130205 has 4 divisors (see below), whose sum is σ = 186051756252. Its totient is φ = 124034504160.

The previous prime is 155043130181. The next prime is 155043130211. The reversal of 155043130205 is 502031340551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502031340551 = 13 ⋅38617795427.

It can be written as a sum of positive squares in 2 ways, for example, as 94604841241 + 60438288964 = 307579^2 + 245842^2 .

It is not a de Polignac number, because 155043130205 - 2⁸ = 155043129949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15504313016 + ... + 15504313025.

It is an arithmetic number, because the mean of its divisors is an integer number (46512939063).

Almost surely, 2^155043130205 is an apocalyptic number.

It is an amenable number.

155043130205 is a deficient number, since it is larger than the sum of its proper divisors (31008626047).

155043130205 is an equidigital number, since it uses as much as digits as its factorization.

155043130205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31008626046.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 155043130205 its reverse (502031340551), we get a palindrome (657074470756).

The spelling of 155043130205 in words is "one hundred fifty-five billion, forty-three million, one hundred thirty thousand, two hundred five".