42865447872 has 56 divisors (see below), whose sum is σ = 122139055696. Its totient is φ = 13189367808.

The previous prime is 42865447853. The next prime is 42865447879. The reversal of 42865447872 is 27874456824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42865447879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8584333 + ... + 8589324.

It is an arithmetic number, because the mean of its divisors is an integer number (2181054566).

Almost surely, 2^42865447872 is an apocalyptic number.

It is an amenable number.

42865447872 is an abundant number, since it is smaller than the sum of its proper divisors (79273607824).

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

42865447872 is a wasteful number, since it uses less digits than its factorization.

42865447872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17173685 (or 17173675 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 57.

The spelling of 42865447872 in words is "forty-two billion, eight hundred sixty-five million, four hundred forty-seven thousand, eight hundred seventy-two".