3818721764047 has 2 divisors, whose sum is σ = 3818721764048. Its totient is φ = 3818721764046.

The previous prime is 3818721763957. The next prime is 3818721764063. The reversal of 3818721764047 is 7404671278183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3818721764047 - 2⁷ = 3818721763919 is a prime.

It is a super-2 number, since 2×3818721764047² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3818721763982 and 3818721764000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3818721764747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909360882023 + 1909360882024.

It is an arithmetic number, because the mean of its divisors is an integer number (1909360882024).

Almost surely, 2^{3818721764047} is an apocalyptic number.

3818721764047 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818721764047 is an equidigital number, since it uses as much as digits as its factorization.

3818721764047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The spelling of 3818721764047 in words is "three trillion, eight hundred eighteen billion, seven hundred twenty-one million, seven hundred sixty-four thousand, forty-seven".