461456262611221 has 2 divisors, whose sum is σ = 461456262611222. Its totient is φ = 461456262611220.

The previous prime is 461456262611189. The next prime is 461456262611243. The reversal of 461456262611221 is 122116262654164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441129789548100 + 20326473063121 = 21003090^2 + 4508489^2 .

It is a cyclic number.

It is not a de Polignac number, because 461456262611221 - 2⁵ = 461456262611189 is a prime.

It is a super-2 number, since 2×461456262611221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461456262611321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230728131305610 + 230728131305611.

It is an arithmetic number, because the mean of its divisors is an integer number (230728131305611).

Almost surely, 2^{461456262611221} is an apocalyptic number.

It is an amenable number.

461456262611221 is a deficient number, since it is larger than the sum of its proper divisors (1).

461456262611221 is an equidigital number, since it uses as much as digits as its factorization.

461456262611221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 49.

The spelling of 461456262611221 in words is "four hundred sixty-one trillion, four hundred fifty-six billion, two hundred sixty-two million, six hundred eleven thousand, two hundred twenty-one".