33138733488 has 80 divisors (see below), whose sum is σ = 103593369600. Its totient is φ = 8911254528.

The previous prime is 33138733487. The next prime is 33138733489. The reversal of 33138733488 is 88433783133.

It is an interprime number because it is at equal distance from previous prime (33138733487) and next prime (33138733489).

It is a super-2 number, since 2×33138733488² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 33138733488.

It is not an unprimeable number, because it can be changed into a prime (33138733483) 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, 2895088 + ... + 2906511.

It is an arithmetic number, because the mean of its divisors is an integer number (1294917120).

Almost surely, 2^33138733488 is an apocalyptic number.

It is an amenable number.

33138733488 is an abundant number, since it is smaller than the sum of its proper divisors (70454636112).

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

33138733488 is a wasteful number, since it uses less digits than its factorization.

33138733488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801634 (or 5801628 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The spelling of 33138733488 in words is "thirty-three billion, one hundred thirty-eight million, seven hundred thirty-three thousand, four hundred eighty-eight".