2540636612 has 6 divisors (see below), whose sum is σ = 4446114078. Its totient is φ = 1270318304.

The previous prime is 2540636543. The next prime is 2540636629. The reversal of 2540636612 is 2166360452.

It is a happy number.

2540636612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1460462656 + 1080173956 = 38216^2 + 32866^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317579573 + ... + 317579580.

It is an arithmetic number, because the mean of its divisors is an integer number (741019013).

Almost surely, 2^2540636612 is an apocalyptic number.

It is an amenable number.

2540636612 is a deficient number, since it is larger than the sum of its proper divisors (1905477466).

2540636612 is a wasteful number, since it uses less digits than its factorization.

2540636612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635159157 (or 635159155 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2540636612 is about 50404.7280718783. The cubic root of 2540636612 is about 1364.5229696286.

The spelling of 2540636612 in words is "two billion, five hundred forty million, six hundred thirty-six thousand, six hundred twelve".