6786951171997 has 2 divisors, whose sum is σ = 6786951171998. Its totient is φ = 6786951171996.

The previous prime is 6786951171971. The next prime is 6786951172091. The reversal of 6786951171997 is 7991711596876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4685086224036 + 2101864947961 = 2164506^2 + 1449781^2 .

It is a cyclic number.

It is not a de Polignac number, because 6786951171997 - 2¹⁵ = 6786951139229 is a prime.

It is a super-2 number, since 2×6786951171997² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6786951171697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3393475585998 + 3393475585999.

It is an arithmetic number, because the mean of its divisors is an integer number (3393475585999).

Almost surely, 2^{6786951171997} is an apocalyptic number.

It is an amenable number.

6786951171997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6786951171997 is an equidigital number, since it uses as much as digits as its factorization.

6786951171997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360067680, while the sum is 76.

The spelling of 6786951171997 in words is "six trillion, seven hundred eighty-six billion, nine hundred fifty-one million, one hundred seventy-one thousand, nine hundred ninety-seven".