542621564339 has 2 divisors, whose sum is σ = 542621564340. Its totient is φ = 542621564338.

The previous prime is 542621564323. The next prime is 542621564389. The reversal of 542621564339 is 933465126245.

It is a happy number.

It is an a-pointer prime, because the next prime (542621564389) can be obtained adding 542621564339 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542621564339 - 2⁴ = 542621564323 is a prime.

It is not a weakly prime, because it can be changed into another prime (542621564389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271310782169 + 271310782170.

It is an arithmetic number, because the mean of its divisors is an integer number (271310782170).

Almost surely, 2^542621564339 is an apocalyptic number.

542621564339 is a deficient number, since it is larger than the sum of its proper divisors (1).

542621564339 is an equidigital number, since it uses as much as digits as its factorization.

542621564339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 50.

The spelling of 542621564339 in words is "five hundred forty-two billion, six hundred twenty-one million, five hundred sixty-four thousand, three hundred thirty-nine".