6744636117161 has 2 divisors, whose sum is σ = 6744636117162. Its totient is φ = 6744636117160.

The previous prime is 6744636117157. The next prime is 6744636117209. The reversal of 6744636117161 is 1617116364476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5053481520025 + 1691154597136 = 2247995^2 + 1300444^2 .

It is a cyclic number.

It is not a de Polignac number, because 6744636117161 - 2² = 6744636117157 is a prime.

It is a super-2 number, since 2×6744636117161² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6744636117151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372318058580 + 3372318058581.

It is an arithmetic number, because the mean of its divisors is an integer number (3372318058581).

Almost surely, 2^{6744636117161} is an apocalyptic number.

It is an amenable number.

6744636117161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6744636117161 is an equidigital number, since it uses as much as digits as its factorization.

6744636117161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The spelling of 6744636117161 in words is "six trillion, seven hundred forty-four billion, six hundred thirty-six million, one hundred seventeen thousand, one hundred sixty-one".