424706551561 has 2 divisors, whose sum is σ = 424706551562. Its totient is φ = 424706551560.

The previous prime is 424706551553. The next prime is 424706551579. The reversal of 424706551561 is 165155607424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424504371600 + 202179961 = 651540^2 + 14219^2 .

It is a cyclic number.

It is not a de Polignac number, because 424706551561 - 2³ = 424706551553 is a prime.

It is not a weakly prime, because it can be changed into another prime (424706501561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212353275780 + 212353275781.

It is an arithmetic number, because the mean of its divisors is an integer number (212353275781).

Almost surely, 2^424706551561 is an apocalyptic number.

It is an amenable number.

424706551561 is a deficient number, since it is larger than the sum of its proper divisors (1).

424706551561 is an equidigital number, since it uses as much as digits as its factorization.

424706551561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 424706551561 in words is "four hundred twenty-four billion, seven hundred six million, five hundred fifty-one thousand, five hundred sixty-one".