6787804157 has 2 divisors, whose sum is σ = 6787804158. Its totient is φ = 6787804156.

The previous prime is 6787804141. The next prime is 6787804213. The reversal of 6787804157 is 7514087876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6371072761 + 416731396 = 79819^2 + 20414^2 .

It is a cyclic number.

It is not a de Polignac number, because 6787804157 - 2⁴ = 6787804141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6787804099 and 6787804108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6787804117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393902078 + 3393902079.

It is an arithmetic number, because the mean of its divisors is an integer number (3393902079).

Almost surely, 2^6787804157 is an apocalyptic number.

It is an amenable number.

6787804157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6787804157 is an equidigital number, since it uses as much as digits as its factorization.

6787804157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2634240, while the sum is 53.

The square root of 6787804157 is about 82388.1311658421. The cubic root of 6787804157 is about 1893.4031755263.

The spelling of 6787804157 in words is "six billion, seven hundred eighty-seven million, eight hundred four thousand, one hundred fifty-seven".