542244320993 has 2 divisors, whose sum is σ = 542244320994. Its totient is φ = 542244320992.

The previous prime is 542244320987. The next prime is 542244321023. The reversal of 542244320993 is 399023442245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366924582049 + 175319738944 = 605743^2 + 418712^2 .

It is a cyclic number.

It is not a de Polignac number, because 542244320993 - 2¹⁶ = 542244255457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (542244320593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271122160496 + 271122160497.

It is an arithmetic number, because the mean of its divisors is an integer number (271122160497).

Almost surely, 2^542244320993 is an apocalyptic number.

It is an amenable number.

542244320993 is a deficient number, since it is larger than the sum of its proper divisors (1).

542244320993 is an equidigital number, since it uses as much as digits as its factorization.

542244320993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 542244320993 in words is "five hundred forty-two billion, two hundred forty-four million, three hundred twenty thousand, nine hundred ninety-three".