33947424138 has 32 divisors (see below), whose sum is σ = 70096061952. Its totient is φ = 10949054400.

The previous prime is 33947424131. The next prime is 33947424139. The reversal of 33947424138 is 83142474933.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33947424131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1742620 + ... + 1761992.

It is an arithmetic number, because the mean of its divisors is an integer number (2190501936).

Almost surely, 2^33947424138 is an apocalyptic number.

33947424138 is an abundant number, since it is smaller than the sum of its proper divisors (36148637814).

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

33947424138 is a wasteful number, since it uses less digits than its factorization.

33947424138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830.

The product of its digits is 1741824, while the sum is 48.

The spelling of 33947424138 in words is "thirty-three billion, nine hundred forty-seven million, four hundred twenty-four thousand, one hundred thirty-eight".