42815693188 has 24 divisors (see below), whose sum is σ = 75380222232. Its totient is φ = 21278552064.

The previous prime is 42815693161. The next prime is 42815693191. The reversal of 42815693188 is 88139651824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25568649604 + 17247043584 = 159902^2 + 131328^2 .

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, 4338756 + ... + 4348612.

It is an arithmetic number, because the mean of its divisors is an integer number (3140842593).

Almost surely, 2^42815693188 is an apocalyptic number.

It is an amenable number.

42815693188 is a deficient number, since it is larger than the sum of its proper divisors (32564529044).

42815693188 is a wasteful number, since it uses less digits than its factorization.

42815693188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16311 (or 16309 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 55.

The spelling of 42815693188 in words is "forty-two billion, eight hundred fifteen million, six hundred ninety-three thousand, one hundred eighty-eight".