461456214730981 has 2 divisors, whose sum is σ = 461456214730982. Its totient is φ = 461456214730980.

The previous prime is 461456214730967. The next prime is 461456214731047. The reversal of 461456214730981 is 189037412654164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237564576396900 + 223891638334081 = 15413130^2 + 14963009^2 .

It is a cyclic number.

It is not a de Polignac number, because 461456214730981 - 2⁴⁷ = 320718726375653 is a prime.

It is a super-2 number, since 2×461456214730981² (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 (461456214730921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230728107365490 + 230728107365491.

It is an arithmetic number, because the mean of its divisors is an integer number (230728107365491).

It is a 1-persistent number, because it is pandigital, but 2⋅461456214730981 = 922912429461962 is not.

Almost surely, 2^{461456214730981} is an apocalyptic number.

It is an amenable number.

461456214730981 is a deficient number, since it is larger than the sum of its proper divisors (1).

461456214730981 is an equidigital number, since it uses as much as digits as its factorization.

461456214730981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 461456214730981 in words is "four hundred sixty-one trillion, four hundred fifty-six billion, two hundred fourteen million, seven hundred thirty thousand, nine hundred eighty-one".