3681388851043 has 2 divisors, whose sum is σ = 3681388851044. Its totient is φ = 3681388851042.

The previous prime is 3681388851017. The next prime is 3681388851059. The reversal of 3681388851043 is 3401588831863.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3681388851043 - 2⁵ = 3681388851011 is a prime.

It is not a weakly prime, because it can be changed into another prime (3681388851013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840694425521 + 1840694425522.

It is an arithmetic number, because the mean of its divisors is an integer number (1840694425522).

Almost surely, 2^{3681388851043} is an apocalyptic number.

3681388851043 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681388851043 is an equidigital number, since it uses as much as digits as its factorization.

3681388851043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 3681388851043 in words is "three trillion, six hundred eighty-one billion, three hundred eighty-eight million, eight hundred fifty-one thousand, forty-three".