42438678136 has 16 divisors (see below), whose sum is σ = 79949645640. Its totient is φ = 21118772640.

The previous prime is 42438678133. The next prime is 42438678143. The reversal of 42438678136 is 63187683424.

42438678136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42438678133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12569011 + ... + 12572386.

Almost surely, 2^42438678136 is an apocalyptic number.

It is an amenable number.

42438678136 is a deficient number, since it is larger than the sum of its proper divisors (37510967504).

42438678136 is a wasteful number, since it uses less digits than its factorization.

42438678136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25141614 (or 25141610 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 52.

The spelling of 42438678136 in words is "forty-two billion, four hundred thirty-eight million, six hundred seventy-eight thousand, one hundred thirty-six".