3667340740681 has 2 divisors, whose sum is σ = 3667340740682. Its totient is φ = 3667340740680.

The previous prime is 3667340740673. The next prime is 3667340740709. The reversal of 3667340740681 is 1860470437663.

3667340740681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2215096422400 + 1452244318281 = 1488320^2 + 1205091^2 .

It is a cyclic number.

It is not a de Polignac number, because 3667340740681 - 2³ = 3667340740673 is a prime.

It is a super-2 number, since 2×3667340740681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3667340740621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833670370340 + 1833670370341.

It is an arithmetic number, because the mean of its divisors is an integer number (1833670370341).

Almost surely, 2^{3667340740681} is an apocalyptic number.

It is an amenable number.

3667340740681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3667340740681 is an equidigital number, since it uses as much as digits as its factorization.

3667340740681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 3667340740681 in words is "three trillion, six hundred sixty-seven billion, three hundred forty million, seven hundred forty thousand, six hundred eighty-one".