42856639468 has 12 divisors (see below), whose sum is σ = 75045800592. Its totient is φ = 21414982160.

The previous prime is 42856639439. The next prime is 42856639499. The reversal of 42856639468 is 86493665824.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3327163 + ... + 3340018.

It is an arithmetic number, because the mean of its divisors is an integer number (6253816716).

Almost surely, 2^42856639468 is an apocalyptic number.

It is an amenable number.

42856639468 is a deficient number, since it is larger than the sum of its proper divisors (32189161124).

42856639468 is a wasteful number, since it uses less digits than its factorization.

42856639468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6668792 (or 6668790 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 61.

The spelling of 42856639468 in words is "forty-two billion, eight hundred fifty-six million, six hundred thirty-nine thousand, four hundred sixty-eight".