42995659923 has 32 divisors (see below), whose sum is σ = 63986760000. Its totient is φ = 28533689856.

The previous prime is 42995659921. The next prime is 42995659979. The reversal of 42995659923 is 32995659924.

42995659923 is a `hidden beast` number, since 42 + 9 + 9 + 565 + 9 + 9 + 23 = 666.

It is not a de Polignac number, because 42995659923 - 2¹ = 42995659921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42995659921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16478443 + ... + 16481051.

It is an arithmetic number, because the mean of its divisors is an integer number (1999586250).

Almost surely, 2^42995659923 is an apocalyptic number.

42995659923 is a deficient number, since it is larger than the sum of its proper divisors (20991100077).

42995659923 is a wasteful number, since it uses less digits than its factorization.

42995659923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156 (or 5150 counting only the distinct ones).

The product of its digits is 47239200, while the sum is 63.

Subtracting from 42995659923 its reverse (32995659924), we obtain a palindrome (9999999999).

The spelling of 42995659923 in words is "forty-two billion, nine hundred ninety-five million, six hundred fifty-nine thousand, nine hundred twenty-three".