2511263161 has 12 divisors (see below), whose sum is σ = 2827644372. Its totient is φ = 2227280000.

The previous prime is 2511263141. The next prime is 2511263173. The reversal of 2511263161 is 1613621152.

It can be written as a sum of positive squares in 2 ways, for example, as 351337536 + 2159925625 = 18744^2 + 46475^2 .

It is not a de Polignac number, because 2511263161 - 2⁵ = 2511263129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2511263141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248140 + ... + 258061.

It is an arithmetic number, because the mean of its divisors is an integer number (235637031).

Almost surely, 2^2511263161 is an apocalyptic number.

It is an amenable number.

2511263161 is a deficient number, since it is larger than the sum of its proper divisors (316381211).

2511263161 is a wasteful number, since it uses less digits than its factorization.

2511263161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506264 (or 506253 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 2511263161 is about 50112.5050361684. The cubic root of 2511263161 is about 1359.2439499092.

The spelling of 2511263161 in words is "two billion, five hundred eleven million, two hundred sixty-three thousand, one hundred sixty-one".