4368013377821 has 2 divisors, whose sum is σ = 4368013377822. Its totient is φ = 4368013377820.

The previous prime is 4368013377769. The next prime is 4368013377853. The reversal of 4368013377821 is 1287733108634.

4368013377821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3302721040921 + 1065292336900 = 1817339^2 + 1032130^2 .

It is a cyclic number.

It is not a de Polignac number, because 4368013377821 - 2³⁸ = 4093135470877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4368013373821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2184006688910 + 2184006688911.

It is an arithmetic number, because the mean of its divisors is an integer number (2184006688911).

Almost surely, 2^{4368013377821} is an apocalyptic number.

It is an amenable number.

4368013377821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4368013377821 is an equidigital number, since it uses as much as digits as its factorization.

4368013377821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 4368013377821 in words is "four trillion, three hundred sixty-eight billion, thirteen million, three hundred seventy-seven thousand, eight hundred twenty-one".