33118438542 has 64 divisors (see below), whose sum is σ = 77164061184. Its totient is φ = 9280218240.

The previous prime is 33118438541. The next prime is 33118438571. The reversal of 33118438542 is 24583481133.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 33118438494 and 33118438503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33118438541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 870388 + ... + 907640.

It is an arithmetic number, because the mean of its divisors is an integer number (1205688456).

Almost surely, 2^33118438542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33118438542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38582030592).

33118438542 is an abundant number, since it is smaller than the sum of its proper divisors (44045622642).

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

33118438542 is a wasteful number, since it uses less digits than its factorization.

33118438542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37673.

The product of its digits is 276480, while the sum is 42.

The spelling of 33118438542 in words is "thirty-three billion, one hundred eighteen million, four hundred thirty-eight thousand, five hundred forty-two".