4542868469021 has 2 divisors, whose sum is σ = 4542868469022. Its totient is φ = 4542868469020.

The previous prime is 4542868468973. The next prime is 4542868469023. The reversal of 4542868469021 is 1209648682454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4316400984025 + 226467484996 = 2077595^2 + 475886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4542868469021 - 2¹⁴ = 4542868452637 is a prime.

Together with 4542868469023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4542868469023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271434234510 + 2271434234511.

It is an arithmetic number, because the mean of its divisors is an integer number (2271434234511).

Almost surely, 2^{4542868469021} is an apocalyptic number.

It is an amenable number.

4542868469021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4542868469021 is an equidigital number, since it uses as much as digits as its factorization.

4542868469021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 4542868469021 in words is "four trillion, five hundred forty-two billion, eight hundred sixty-eight million, four hundred sixty-nine thousand, twenty-one".