3864565004947 has 2 divisors, whose sum is σ = 3864565004948. Its totient is φ = 3864565004946.

The previous prime is 3864565004929. The next prime is 3864565004953. The reversal of 3864565004947 is 7494005654683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3864565004947 - 2¹⁵ = 3864564972179 is a prime.

It is a super-2 number, since 2×3864565004947² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3864565074947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932282502473 + 1932282502474.

It is an arithmetic number, because the mean of its divisors is an integer number (1932282502474).

Almost surely, 2^{3864565004947} is an apocalyptic number.

3864565004947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3864565004947 is an equidigital number, since it uses as much as digits as its factorization.

3864565004947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87091200, while the sum is 61.

The spelling of 3864565004947 in words is "three trillion, eight hundred sixty-four billion, five hundred sixty-five million, four thousand, nine hundred forty-seven".