33768721404 has 72 divisors (see below), whose sum is σ = 94166195760. Its totient is φ = 10117958400.

The previous prime is 33768721403. The next prime is 33768721447. The reversal of 33768721404 is 40412786733.

It is a super-2 number, since 2×33768721404² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33768721404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33768721403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443827 + ... + 514314.

It is an arithmetic number, because the mean of its divisors is an integer number (1307863830).

Almost surely, 2^33768721404 is an apocalyptic number.

It is an amenable number.

33768721404 is an abundant number, since it is smaller than the sum of its proper divisors (60397474356).

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

33768721404 is a wasteful number, since it uses less digits than its factorization.

33768721404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958251 (or 958246 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 33768721404 in words is "thirty-three billion, seven hundred sixty-eight million, seven hundred twenty-one thousand, four hundred four".