33918126858 has 144 divisors (see below), whose sum is σ = 92589194880. Its totient is φ = 8783945280.

The previous prime is 33918126857. The next prime is 33918126871. The reversal of 33918126858 is 85862181933.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (33918126857) 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 71 ways as a sum of consecutive naturals, for example, 5470216 + ... + 5476412.

It is an arithmetic number, because the mean of its divisors is an integer number (642980520).

Almost surely, 2^33918126858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33918126858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46294597440).

33918126858 is an abundant number, since it is smaller than the sum of its proper divisors (58671068022).

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

33918126858 is a wasteful number, since it uses less digits than its factorization.

33918126858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6579 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The spelling of 33918126858 in words is "thirty-three billion, nine hundred eighteen million, one hundred twenty-six thousand, eight hundred fifty-eight".