6651207306361 has 2 divisors, whose sum is σ = 6651207306362. Its totient is φ = 6651207306360.

The previous prime is 6651207306301. The next prime is 6651207306383. The reversal of 6651207306361 is 1636037021566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5963701000761 + 687506305600 = 2442069^2 + 829160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651207306361 is a prime.

It is a super-2 number, since 2×6651207306361² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6651207306301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325603653180 + 3325603653181.

It is an arithmetic number, because the mean of its divisors is an integer number (3325603653181).

Almost surely, 2^{6651207306361} is an apocalyptic number.

It is an amenable number.

6651207306361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651207306361 is an equidigital number, since it uses as much as digits as its factorization.

6651207306361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 6651207306361 in words is "six trillion, six hundred fifty-one billion, two hundred seven million, three hundred six thousand, three hundred sixty-one".