33491111138 has 8 divisors (see below), whose sum is σ = 50569360320. Its totient is φ = 16634657700.

The previous prime is 33491111131. The next prime is 33491111153. The reversal of 33491111138 is 83111119433.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×33491111138² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33491111098 and 33491111107.

It is not an unprimeable number, because it can be changed into a prime (33491111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55448558 + ... + 55449161.

It is an arithmetic number, because the mean of its divisors is an integer number (6321170040).

Almost surely, 2^33491111138 is an apocalyptic number.

33491111138 is a deficient number, since it is larger than the sum of its proper divisors (17078249182).

33491111138 is a wasteful number, since it uses less digits than its factorization.

33491111138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110897872.

The product of its digits is 7776, while the sum is 35.

The spelling of 33491111138 in words is "thirty-three billion, four hundred ninety-one million, one hundred eleven thousand, one hundred thirty-eight".