542796849689 has 2 divisors, whose sum is σ = 542796849690. Its totient is φ = 542796849688.

The previous prime is 542796849653. The next prime is 542796849709. The reversal of 542796849689 is 986948697245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396037369225 + 146759480464 = 629315^2 + 383092^2 .

It is a cyclic number.

It is not a de Polignac number, because 542796849689 - 2⁸ = 542796849433 is a prime.

It is not a weakly prime, because it can be changed into another prime (542796849649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271398424844 + 271398424845.

It is an arithmetic number, because the mean of its divisors is an integer number (271398424845).

Almost surely, 2^542796849689 is an apocalyptic number.

It is an amenable number.

542796849689 is a deficient number, since it is larger than the sum of its proper divisors (1).

542796849689 is an equidigital number, since it uses as much as digits as its factorization.

542796849689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1881169920, while the sum is 77.

The spelling of 542796849689 in words is "five hundred forty-two billion, seven hundred ninety-six million, eight hundred forty-nine thousand, six hundred eighty-nine".