3946156640851 has 2 divisors, whose sum is σ = 3946156640852. Its totient is φ = 3946156640850.

The previous prime is 3946156640813. The next prime is 3946156640873. The reversal of 3946156640851 is 1580466516493.

3946156640851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3946156640851 - 2¹³ = 3946156632659 is a prime.

It is not a weakly prime, because it can be changed into another prime (3946156640051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973078320425 + 1973078320426.

It is an arithmetic number, because the mean of its divisors is an integer number (1973078320426).

Almost surely, 2^{3946156640851} is an apocalyptic number.

3946156640851 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946156640851 is an equidigital number, since it uses as much as digits as its factorization.

3946156640851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 3946156640851 in words is "three trillion, nine hundred forty-six billion, one hundred fifty-six million, six hundred forty thousand, eight hundred fifty-one".