7518521651 has 2 divisors, whose sum is σ = 7518521652. Its totient is φ = 7518521650.

The previous prime is 7518521627. The next prime is 7518521653. The reversal of 7518521651 is 1561258157.

It is a strong prime.

It is an emirp because it is prime and its reverse (1561258157) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7518521651 is a prime.

Together with 7518521653, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7518521599 and 7518521608.

It is not a weakly prime, because it can be changed into another prime (7518521653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3759260825 + 3759260826.

It is an arithmetic number, because the mean of its divisors is an integer number (3759260826).

Almost surely, 2^7518521651 is an apocalyptic number.

7518521651 is a deficient number, since it is larger than the sum of its proper divisors (1).

7518521651 is an equidigital number, since it uses as much as digits as its factorization.

7518521651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 41.

The square root of 7518521651 is about 86709.4092414428. The cubic root of 7518521651 is about 1959.0438251392.

The spelling of 7518521651 in words is "seven billion, five hundred eighteen million, five hundred twenty-one thousand, six hundred fifty-one".