1663100022461 has 2 divisors, whose sum is σ = 1663100022462. Its totient is φ = 1663100022460.

The previous prime is 1663100022317. The next prime is 1663100022469. The reversal of 1663100022461 is 1642200013661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1470352681561 + 192747340900 = 1212581^2 + 439030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663100022461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663100022469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831550011230 + 831550011231.

It is an arithmetic number, because the mean of its divisors is an integer number (831550011231).

Almost surely, 2^{1663100022461} is an apocalyptic number.

It is an amenable number.

1663100022461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663100022461 is an equidigital number, since it uses as much as digits as its factorization.

1663100022461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 1663100022461 in words is "one trillion, six hundred sixty-three billion, one hundred million, twenty-two thousand, four hundred sixty-one".