2516211647 has 2 divisors, whose sum is σ = 2516211648. Its totient is φ = 2516211646.

The previous prime is 2516211637. The next prime is 2516211673. The reversal of 2516211647 is 7461126152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2516211647 - 2⁶ = 2516211583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516211637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258105823 + 1258105824.

It is an arithmetic number, because the mean of its divisors is an integer number (1258105824).

Almost surely, 2^2516211647 is an apocalyptic number.

2516211647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516211647 is an equidigital number, since it uses as much as digits as its factorization.

2516211647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 2516211647 is about 50161.8545012044. The cubic root of 2516211647 is about 1360.1361684232.

Adding to 2516211647 its reverse (7461126152), we get a palindrome (9977337799).

The spelling of 2516211647 in words is "two billion, five hundred sixteen million, two hundred eleven thousand, six hundred forty-seven".