7187722513 has 2 divisors, whose sum is σ = 7187722514. Its totient is φ = 7187722512.

The previous prime is 7187722489. The next prime is 7187722523. The reversal of 7187722513 is 3152277817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3798503424 + 3389219089 = 61632^2 + 58217^2 .

It is a cyclic number.

It is not a de Polignac number, because 7187722513 - 2⁵ = 7187722481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7187722513.

It is not a weakly prime, because it can be changed into another prime (7187722523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3593861256 + 3593861257.

It is an arithmetic number, because the mean of its divisors is an integer number (3593861257).

Almost surely, 2^7187722513 is an apocalyptic number.

It is an amenable number.

7187722513 is a deficient number, since it is larger than the sum of its proper divisors (1).

7187722513 is an equidigital number, since it uses as much as digits as its factorization.

7187722513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 43.

The square root of 7187722513 is about 84780.4370889889. The cubic root of 7187722513 is about 1929.8805722229.

The spelling of 7187722513 in words is "seven billion, one hundred eighty-seven million, seven hundred twenty-two thousand, five hundred thirteen".