427443747660 has 144 divisors (see below), whose sum is σ = 1340618846112. Its totient is φ = 110165376000.

The previous prime is 427443747629. The next prime is 427443747667. The reversal of 427443747660 is 66747344724.

427443747660 is a `hidden beast` number, since 4 + 2 + 7 + 443 + 74 + 76 + 60 = 666.

427443747660 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 427443747597 and 427443747606.

It is not an unprimeable number, because it can be changed into a prime (427443747667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 519010 + ... + 1060310.

It is an arithmetic number, because the mean of its divisors is an integer number (9309853098).

Almost surely, 2^427443747660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427443747660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670309423056).

427443747660 is an abundant number, since it is smaller than the sum of its proper divisors (913175098452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427443747660 is a wasteful number, since it uses less digits than its factorization.

427443747660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541464 (or 541459 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 54.

The spelling of 427443747660 in words is "four hundred twenty-seven billion, four hundred forty-three million, seven hundred forty-seven thousand, six hundred sixty".