7147561513 has 2 divisors, whose sum is σ = 7147561514. Its totient is φ = 7147561512.

The previous prime is 7147561507. The next prime is 7147561537. The reversal of 7147561513 is 3151657417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4945324329 + 2202237184 = 70323^2 + 46928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7147561513 is a prime.

It is not a weakly prime, because it can be changed into another prime (7147561013) 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, 3573780756 + 3573780757.

It is an arithmetic number, because the mean of its divisors is an integer number (3573780757).

Almost surely, 2^7147561513 is an apocalyptic number.

It is an amenable number.

7147561513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7147561513 is an equidigital number, since it uses as much as digits as its factorization.

7147561513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 40.

The square root of 7147561513 is about 84543.2523209274. The cubic root of 7147561513 is about 1926.2794901159.

The spelling of 7147561513 in words is "seven billion, one hundred forty-seven million, five hundred sixty-one thousand, five hundred thirteen".