481564440869 has 2 divisors, whose sum is σ = 481564440870. Its totient is φ = 481564440868.

The previous prime is 481564440859. The next prime is 481564440887. The reversal of 481564440869 is 968044465184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455591250625 + 25973190244 = 674975^2 + 161162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481564440869 is a prime.

It is a super-2 number, since 2×481564440869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481564440829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240782220434 + 240782220435.

It is an arithmetic number, because the mean of its divisors is an integer number (240782220435).

Almost surely, 2^481564440869 is an apocalyptic number.

It is an amenable number.

481564440869 is a deficient number, since it is larger than the sum of its proper divisors (1).

481564440869 is an equidigital number, since it uses as much as digits as its factorization.

481564440869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 481564440869 in words is "four hundred eighty-one billion, five hundred sixty-four million, four hundred forty thousand, eight hundred sixty-nine".