33848639640 has 80 divisors (see below), whose sum is σ = 113769049680. Its totient is φ = 9026303040.

The previous prime is 33848639621. The next prime is 33848639651. The reversal of 33848639640 is 4693684833.

33848639640 is a `hidden beast` number, since 3 + 38 + 486 + 3 + 96 + 40 = 666.

It is a super-2 number, since 2×33848639640² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5220316 + ... + 5226795.

It is an arithmetic number, because the mean of its divisors is an integer number (1422113121).

Almost surely, 2^33848639640 is an apocalyptic number.

33848639640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33848639640 is an abundant number, since it is smaller than the sum of its proper divisors (79920410040).

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

33848639640 is a wasteful number, since it uses less digits than its factorization.

33848639640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447134 (or 10447121 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 33848639640 in words is "thirty-three billion, eight hundred forty-eight million, six hundred thirty-nine thousand, six hundred forty".