427748816961 has 6 divisors (see below), whose sum is σ = 617859402290. Its totient is φ = 285165877968.

The previous prime is 427748816959. The next prime is 427748816983. The reversal of 427748816961 is 169618847724.

427748816961 is a `hidden beast` number, since 427 + 7 + 48 + 8 + 169 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 427578671025 + 170145936 = 653895^2 + 13044^2 .

It is not a de Polignac number, because 427748816961 - 2¹ = 427748816959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427748816161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23763823156 + ... + 23763823173.

Almost surely, 2^427748816961 is an apocalyptic number.

It is an amenable number.

427748816961 is a deficient number, since it is larger than the sum of its proper divisors (190110585329).

427748816961 is a wasteful number, since it uses less digits than its factorization.

427748816961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47527646335 (or 47527646332 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The spelling of 427748816961 in words is "four hundred twenty-seven billion, seven hundred forty-eight million, eight hundred sixteen thousand, nine hundred sixty-one".