2605142636 has 12 divisors (see below), whose sum is σ = 4559482200. Its totient is φ = 1302433440.

The previous prime is 2605142621. The next prime is 2605142653. The reversal of 2605142636 is 6362415062.

It is a happy number.

2605142636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2605142596 and 2605142605.

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, 16376 + ... + 74016.

It is an arithmetic number, because the mean of its divisors is an integer number (379956850).

Almost surely, 2^2605142636 is an apocalyptic number.

It is an amenable number.

2605142636 is a deficient number, since it is larger than the sum of its proper divisors (1954339564).

2605142636 is a wasteful number, since it uses less digits than its factorization.

2605142636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68944 (or 68942 counting only the distinct ones).

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

The square root of 2605142636 is about 51040.5979196953. The cubic root of 2605142636 is about 1375.9748698257.

Adding to 2605142636 its reverse (6362415062), we get a palindrome (8967557698).

The spelling of 2605142636 in words is "two billion, six hundred five million, one hundred forty-two thousand, six hundred thirty-six".