6787367810513 has 2 divisors, whose sum is σ = 6787367810514. Its totient is φ = 6787367810512.

The previous prime is 6787367810423. The next prime is 6787367810557. The reversal of 6787367810513 is 3150187637876.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6726589783489 + 60778027024 = 2593567^2 + 246532^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787367810513 - 2³⁶ = 6718648333777 is a prime.

It is not a weakly prime, because it can be changed into another prime (6787367812513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393683905256 + 3393683905257.

It is an arithmetic number, because the mean of its divisors is an integer number (3393683905257).

Almost surely, 2^{6787367810513} is an apocalyptic number.

It is an amenable number.

6787367810513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6787367810513 is an equidigital number, since it uses as much as digits as its factorization.

6787367810513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 62.

The spelling of 6787367810513 in words is "six trillion, seven hundred eighty-seven billion, three hundred sixty-seven million, eight hundred ten thousand, five hundred thirteen".