7143115513 has 2 divisors, whose sum is σ = 7143115514. Its totient is φ = 7143115512.

The previous prime is 7143115501. The next prime is 7143115517. The reversal of 7143115513 is 3155113417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4003978729 + 3139136784 = 63277^2 + 56028^2 .

It is an emirp because it is prime and its reverse (3155113417) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7143115513 is a prime.

It is a super-2 number, since 2×7143115513² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7143115517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571557756 + 3571557757.

It is an arithmetic number, because the mean of its divisors is an integer number (3571557757).

Almost surely, 2^7143115513 is an apocalyptic number.

It is an amenable number.

7143115513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7143115513 is an equidigital number, since it uses as much as digits as its factorization.

7143115513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 31.

The square root of 7143115513 is about 84516.9539974081. The cubic root of 7143115513 is about 1925.8800058559.

The spelling of 7143115513 in words is "seven billion, one hundred forty-three million, one hundred fifteen thousand, five hundred thirteen".