465243055561 has 2 divisors, whose sum is σ = 465243055562. Its totient is φ = 465243055560.

The previous prime is 465243055547. The next prime is 465243055709. The reversal of 465243055561 is 165550342564.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402693045561 + 62550010000 = 634581^2 + 250100^2 .

It is a cyclic number.

It is not a de Polignac number, because 465243055561 - 2⁹ = 465243055049 is a prime.

It is a super-2 number, since 2×465243055561² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (465243055861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232621527780 + 232621527781.

It is an arithmetic number, because the mean of its divisors is an integer number (232621527781).

Almost surely, 2^465243055561 is an apocalyptic number.

It is an amenable number.

465243055561 is a deficient number, since it is larger than the sum of its proper divisors (1).

465243055561 is an equidigital number, since it uses as much as digits as its factorization.

465243055561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 465243055561 in words is "four hundred sixty-five billion, two hundred forty-three million, fifty-five thousand, five hundred sixty-one".