7287878716229 has 2 divisors, whose sum is σ = 7287878716230. Its totient is φ = 7287878716228.

The previous prime is 7287878716211. The next prime is 7287878716231. The reversal of 7287878716229 is 9226178787827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5969568292900 + 1318310423329 = 2443270^2 + 1148177^2 .

It is a cyclic number.

It is not a de Polignac number, because 7287878716229 - 2¹² = 7287878712133 is a prime.

It is a super-2 number, since 2×7287878716229² (a number of 27 digits) contains 22 as substring.

Together with 7287878716231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7287878716249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643939358114 + 3643939358115.

It is an arithmetic number, because the mean of its divisors is an integer number (3643939358115).

Almost surely, 2^{7287878716229} is an apocalyptic number.

It is an amenable number.

7287878716229 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287878716229 is an equidigital number, since it uses as much as digits as its factorization.

7287878716229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 531062784, while the sum is 74.

The spelling of 7287878716229 in words is "seven trillion, two hundred eighty-seven billion, eight hundred seventy-eight million, seven hundred sixteen thousand, two hundred twenty-nine".