4045121021867 has 2 divisors, whose sum is σ = 4045121021868. Its totient is φ = 4045121021866.

The previous prime is 4045121021857. The next prime is 4045121021933. The reversal of 4045121021867 is 7681201215404.

4045121021867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4045121021867 - 2¹⁴ = 4045121005483 is a prime.

It is not a weakly prime, because it can be changed into another prime (4045121021857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022560510933 + 2022560510934.

It is an arithmetic number, because the mean of its divisors is an integer number (2022560510934).

Almost surely, 2^{4045121021867} is an apocalyptic number.

4045121021867 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045121021867 is an equidigital number, since it uses as much as digits as its factorization.

4045121021867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 4045121021867 in words is "four trillion, forty-five billion, one hundred twenty-one million, twenty-one thousand, eight hundred sixty-seven".