6473741353661 has 2 divisors, whose sum is σ = 6473741353662. Its totient is φ = 6473741353660.

The previous prime is 6473741353633. The next prime is 6473741353697. The reversal of 6473741353661 is 1663531473746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6292542148036 + 181199205625 = 2508494^2 + 425675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6473741353661 is a prime.

It is a super-2 number, since 2×6473741353661² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6473741353597 and 6473741353606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6473741353361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3236870676830 + 3236870676831.

It is an arithmetic number, because the mean of its divisors is an integer number (3236870676831).

Almost surely, 2^{6473741353661} is an apocalyptic number.

It is an amenable number.

6473741353661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6473741353661 is an equidigital number, since it uses as much as digits as its factorization.

6473741353661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 56.

The spelling of 6473741353661 in words is "six trillion, four hundred seventy-three billion, seven hundred forty-one million, three hundred fifty-three thousand, six hundred sixty-one".