4461556056641 has 2 divisors, whose sum is σ = 4461556056642. Its totient is φ = 4461556056640.

The previous prime is 4461556056613. The next prime is 4461556056673. The reversal of 4461556056641 is 1466506551644.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4118545536400 + 343010520241 = 2029420^2 + 585671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4461556056641 is a prime.

It is not a weakly prime, because it can be changed into another prime (4461556055641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2230778028320 + 2230778028321.

It is an arithmetic number, because the mean of its divisors is an integer number (2230778028321).

Almost surely, 2^{4461556056641} is an apocalyptic number.

It is an amenable number.

4461556056641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4461556056641 is an equidigital number, since it uses as much as digits as its factorization.

4461556056641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 4461556056641 in words is "four trillion, four hundred sixty-one billion, five hundred fifty-six million, fifty-six thousand, six hundred forty-one".