427894017723 has 6 divisors (see below), whose sum is σ = 618069136724. Its totient is φ = 285262678476.

The previous prime is 427894017703. The next prime is 427894017731. The reversal of 427894017723 is 327710498724.

427894017723 is a `hidden beast` number, since 427 + 8 + 9 + 40 + 177 + 2 + 3 = 666.

It is not a de Polignac number, because 427894017723 - 2¹³ = 427894009531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427894017723.

It is not an unprimeable number, because it can be changed into a prime (427894017703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23771889865 + ... + 23771889882.

Almost surely, 2^427894017723 is an apocalyptic number.

427894017723 is a deficient number, since it is larger than the sum of its proper divisors (190175119001).

427894017723 is a wasteful number, since it uses less digits than its factorization.

427894017723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47543779753 (or 47543779750 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 427894017723 in words is "four hundred twenty-seven billion, eight hundred ninety-four million, seventeen thousand, seven hundred twenty-three".