33499733138 has 4 divisors (see below), whose sum is σ = 50249599710. Its totient is φ = 16749866568.

The previous prime is 33499733107. The next prime is 33499733149. The reversal of 33499733138 is 83133799433.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22777751929 + 10721981209 = 150923^2 + 103547^2 .

It is a super-2 number, since 2×33499733138² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33499733138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8374933283 + ... + 8374933286.

Almost surely, 2^33499733138 is an apocalyptic number.

33499733138 is a deficient number, since it is larger than the sum of its proper divisors (16749866572).

33499733138 is a wasteful number, since it uses less digits than its factorization.

33499733138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16749866571.

The product of its digits is 4408992, while the sum is 53.

The spelling of 33499733138 in words is "thirty-three billion, four hundred ninety-nine million, seven hundred thirty-three thousand, one hundred thirty-eight".