542404504257851 has 2 divisors, whose sum is σ = 542404504257852. Its totient is φ = 542404504257850.

The previous prime is 542404504257829. The next prime is 542404504257887. The reversal of 542404504257851 is 158752405404245.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542404504257851 is a prime.

It is not a weakly prime, because it can be changed into another prime (542404504251851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271202252128925 + 271202252128926.

It is an arithmetic number, because the mean of its divisors is an integer number (271202252128926).

Almost surely, 2^{542404504257851} is an apocalyptic number.

542404504257851 is a deficient number, since it is larger than the sum of its proper divisors (1).

542404504257851 is an equidigital number, since it uses as much as digits as its factorization.

542404504257851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840000, while the sum is 56.

The spelling of 542404504257851 in words is "five hundred forty-two trillion, four hundred four billion, five hundred four million, two hundred fifty-seven thousand, eight hundred fifty-one".