481445146561 has 4 divisors (see below), whose sum is σ = 481542669252. Its totient is φ = 481347623872.

The previous prime is 481445146549. The next prime is 481445146573. The reversal of 481445146561 is 165641544184.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (481445146549) and next prime (481445146573).

It can be written as a sum of positive squares in 2 ways, for example, as 154311480625 + 327133665936 = 392825^2 + 571956^2 .

It is a cyclic number.

It is not a de Polignac number, because 481445146561 - 2³¹ = 479297662913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481445156561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48753940 + ... + 48763813.

It is an arithmetic number, because the mean of its divisors is an integer number (120385667313).

Almost surely, 2^481445146561 is an apocalyptic number.

It is an amenable number.

481445146561 is a deficient number, since it is larger than the sum of its proper divisors (97522691).

481445146561 is an equidigital number, since it uses as much as digits as its factorization.

481445146561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97522690.

The product of its digits is 1843200, while the sum is 49.

The spelling of 481445146561 in words is "four hundred eighty-one billion, four hundred forty-five million, one hundred forty-six thousand, five hundred sixty-one".