2611638812 has 24 divisors (see below), whose sum is σ = 4685231376. Its totient is φ = 1273304448.

The previous prime is 2611638797. The next prime is 2611638817. The reversal of 2611638812 is 2188361162.

2611638812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2611638817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3233 + ... + 72344.

It is an arithmetic number, because the mean of its divisors is an integer number (195217974).

Almost surely, 2^2611638812 is an apocalyptic number.

It is an amenable number.

2611638812 is a deficient number, since it is larger than the sum of its proper divisors (2073592564).

2611638812 is a wasteful number, since it uses less digits than its factorization.

2611638812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75797 (or 75795 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 2611638812 is about 51104.1956398885. The cubic root of 2611638812 is about 1377.1176294508.

Adding to 2611638812 its reverse (2188361162), we get a palindrome (4799999974).

The spelling of 2611638812 in words is "two billion, six hundred eleven million, six hundred thirty-eight thousand, eight hundred twelve".