2511205139 has 2 divisors, whose sum is σ = 2511205140. Its totient is φ = 2511205138.

The previous prime is 2511205121. The next prime is 2511205181. The reversal of 2511205139 is 9315021152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2511205139 - 2²⁰ = 2510156563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2511202139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255602569 + 1255602570.

It is an arithmetic number, because the mean of its divisors is an integer number (1255602570).

Almost surely, 2^2511205139 is an apocalyptic number.

2511205139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2511205139 is an equidigital number, since it uses as much as digits as its factorization.

2511205139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 2511205139 is about 50111.9261154468. The cubic root of 2511205139 is about 1359.2334815174.

The spelling of 2511205139 in words is "two billion, five hundred eleven million, two hundred five thousand, one hundred thirty-nine".