33684431412 has 24 divisors (see below), whose sum is σ = 78844955616. Its totient is φ = 11192722528.

The previous prime is 33684431383. The next prime is 33684431413. The reversal of 33684431412 is 21413448633.

It is a super-2 number, since 2×33684431412² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33684431413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4423698 + ... + 4431305.

It is an arithmetic number, because the mean of its divisors is an integer number (3285206484).

Almost surely, 2^33684431412 is an apocalyptic number.

It is an amenable number.

33684431412 is an abundant number, since it is smaller than the sum of its proper divisors (45160524204).

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

33684431412 is a wasteful number, since it uses less digits than its factorization.

33684431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8855327 (or 8855325 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The spelling of 33684431412 in words is "thirty-three billion, six hundred eighty-four million, four hundred thirty-one thousand, four hundred twelve".