42871538785 has 8 divisors (see below), whose sum is σ = 51621431400. Its totient is φ = 34180174464.

The previous prime is 42871538683. The next prime is 42871538803. The reversal of 42871538785 is 58783517824.

It can be written as a sum of positive squares in 4 ways, for example, as 9127318369 + 33744220416 = 95537^2 + 183696^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42871538785 - 2⁷ = 42871538657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14630460 + ... + 14633389.

It is an arithmetic number, because the mean of its divisors is an integer number (6452678925).

Almost surely, 2^42871538785 is an apocalyptic number.

It is an amenable number.

42871538785 is a deficient number, since it is larger than the sum of its proper divisors (8749892615).

42871538785 is a wasteful number, since it uses less digits than its factorization.

42871538785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29264147.

The product of its digits is 15052800, while the sum is 58.

The spelling of 42871538785 in words is "forty-two billion, eight hundred seventy-one million, five hundred thirty-eight thousand, seven hundred eighty-five".