2516440636 has 24 divisors (see below), whose sum is σ = 4723019280. Its totient is φ = 1169505792.

The previous prime is 2516440621. The next prime is 2516440681. The reversal of 2516440636 is 6360446152.

It is a junction number, because it is equal to n+sod(n) for n = 2516440595 and 2516440604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308341 + ... + 316396.

It is an arithmetic number, because the mean of its divisors is an integer number (196792470).

Almost surely, 2^2516440636 is an apocalyptic number.

It is an amenable number.

2516440636 is a deficient number, since it is larger than the sum of its proper divisors (2206578644).

2516440636 is a wasteful number, since it uses less digits than its factorization.

2516440636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624813 (or 624811 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 2516440636 is about 50164.1369506144. The cubic root of 2516440636 is about 1360.1774271112.

Adding to 2516440636 its reverse (6360446152), we get a palindrome (8876886788).

The spelling of 2516440636 in words is "two billion, five hundred sixteen million, four hundred forty thousand, six hundred thirty-six".