542569937561 has 2 divisors, whose sum is σ = 542569937562. Its totient is φ = 542569937560.

The previous prime is 542569937477. The next prime is 542569937599. The reversal of 542569937561 is 165739965245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376314768025 + 166255169536 = 613445^2 + 407744^2 .

It is a cyclic number.

It is not a de Polignac number, because 542569937561 - 2¹⁴ = 542569921177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542569937494 and 542569937503.

It is not a weakly prime, because it can be changed into another prime (542569927561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271284968780 + 271284968781.

It is an arithmetic number, because the mean of its divisors is an integer number (271284968781).

Almost surely, 2^542569937561 is an apocalyptic number.

It is an amenable number.

542569937561 is a deficient number, since it is larger than the sum of its proper divisors (1).

542569937561 is an equidigital number, since it uses as much as digits as its factorization.

542569937561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236000, while the sum is 62.

The spelling of 542569937561 in words is "five hundred forty-two billion, five hundred sixty-nine million, nine hundred thirty-seven thousand, five hundred sixty-one".