3386728154681 has 2 divisors, whose sum is σ = 3386728154682. Its totient is φ = 3386728154680.

The previous prime is 3386728154599. The next prime is 3386728154701. The reversal of 3386728154681 is 1864518276833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1794313830400 + 1592414324281 = 1339520^2 + 1261909^2 .

It is a cyclic number.

It is not a de Polignac number, because 3386728154681 - 2²² = 3386723960377 is a prime.

It is a super-2 number, since 2×3386728154681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3386728154881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1693364077340 + 1693364077341.

It is an arithmetic number, because the mean of its divisors is an integer number (1693364077341).

Almost surely, 2^{3386728154681} is an apocalyptic number.

It is an amenable number.

3386728154681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3386728154681 is an equidigital number, since it uses as much as digits as its factorization.

3386728154681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46448640, while the sum is 62.

The spelling of 3386728154681 in words is "three trillion, three hundred eighty-six billion, seven hundred twenty-eight million, one hundred fifty-four thousand, six hundred eighty-one".