42667897728 has 32 divisors (see below), whose sum is σ = 113336604360. Its totient is φ = 14222632448.

The previous prime is 42667897721. The next prime is 42667897787. The reversal of 42667897728 is 82779876624.

42667897728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42667897721) 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, 55556775 + ... + 55557542.

Almost surely, 2^42667897728 is an apocalyptic number.

42667897728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42667897728 is an abundant number, since it is smaller than the sum of its proper divisors (70668706632).

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

42667897728 is a wasteful number, since it uses less digits than its factorization.

42667897728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111114334 (or 111114322 counting only the distinct ones).

The product of its digits is 113799168, while the sum is 66.

The spelling of 42667897728 in words is "forty-two billion, six hundred sixty-seven million, eight hundred ninety-seven thousand, seven hundred twenty-eight".