455061221083981 has 2 divisors, whose sum is σ = 455061221083982. Its totient is φ = 455061221083980.

The previous prime is 455061221083961. The next prime is 455061221083991. The reversal of 455061221083981 is 189380122160554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429971991606756 + 25089229477225 = 20735766^2 + 5008915^2 .

It is a cyclic number.

It is not a de Polignac number, because 455061221083981 - 2⁷ = 455061221083853 is a prime.

It is a super-2 number, since 2×455061221083981² (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 (455061221083961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227530610541990 + 227530610541991.

It is an arithmetic number, because the mean of its divisors is an integer number (227530610541991).

Almost surely, 2^{455061221083981} is an apocalyptic number.

It is an amenable number.

455061221083981 is a deficient number, since it is larger than the sum of its proper divisors (1).

455061221083981 is an equidigital number, since it uses as much as digits as its factorization.

455061221083981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 455061221083981 in words is "four hundred fifty-five trillion, sixty-one billion, two hundred twenty-one million, eighty-three thousand, nine hundred eighty-one".