2516501636 has 72 divisors (see below), whose sum is σ = 5200778016. Its totient is φ = 1052980480.

The previous prime is 2516501633. The next prime is 2516501671. The reversal of 2516501636 is 6361056152.

2516501636 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 = 2516501596 and 2516501605.

It is not an unprimeable number, because it can be changed into a prime (2516501633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1651571 + ... + 1653093.

It is an arithmetic number, because the mean of its divisors is an integer number (72233028).

Almost surely, 2^2516501636 is an apocalyptic number.

It is an amenable number.

2516501636 is an abundant number, since it is smaller than the sum of its proper divisors (2684276380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2516501636 is a wasteful number, since it uses less digits than its factorization.

2516501636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2516501636 is about 50164.7449510112. The cubic root of 2516501636 is about 1360.1884175224.

Adding to 2516501636 its reverse (6361056152), we get a palindrome (8877557788).

The spelling of 2516501636 in words is "two billion, five hundred sixteen million, five hundred one thousand, six hundred thirty-six".