6551689417369 has 2 divisors, whose sum is σ = 6551689417370. Its totient is φ = 6551689417368.

The previous prime is 6551689417307. The next prime is 6551689417457. The reversal of 6551689417369 is 9637149861556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6392867241744 + 158822175625 = 2528412^2 + 398525^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551689417369 - 2¹¹ = 6551689415321 is a prime.

It is a super-2 number, since 2×6551689417369² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6551689417298 and 6551689417307.

It is not a weakly prime, because it can be changed into another prime (6551689417069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275844708684 + 3275844708685.

It is an arithmetic number, because the mean of its divisors is an integer number (3275844708685).

Almost surely, 2^{6551689417369} is an apocalyptic number.

It is an amenable number.

6551689417369 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551689417369 is an equidigital number, since it uses as much as digits as its factorization.

6551689417369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 293932800, while the sum is 70.

The spelling of 6551689417369 in words is "six trillion, five hundred fifty-one billion, six hundred eighty-nine million, four hundred seventeen thousand, three hundred sixty-nine".