2042854664693 has 2 divisors, whose sum is σ = 2042854664694. Its totient is φ = 2042854664692.

The previous prime is 2042854664677. The next prime is 2042854664737. The reversal of 2042854664693 is 3964664582402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1750284018289 + 292570646404 = 1322983^2 + 540898^2 .

It is a cyclic number.

It is not a de Polignac number, because 2042854664693 - 2⁴ = 2042854664677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2042854664603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021427332346 + 1021427332347.

It is an arithmetic number, because the mean of its divisors is an integer number (1021427332347).

Almost surely, 2^{2042854664693} is an apocalyptic number.

It is an amenable number.

2042854664693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2042854664693 is an equidigital number, since it uses as much as digits as its factorization.

2042854664693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59719680, while the sum is 59.

The spelling of 2042854664693 in words is "two trillion, forty-two billion, eight hundred fifty-four million, six hundred sixty-four thousand, six hundred ninety-three".