33686667036 has 72 divisors (see below), whose sum is σ = 92993282928. Its totient is φ = 10197120000.

The previous prime is 33686667017. The next prime is 33686667037. The reversal of 33686667036 is 63076668633.

It is a happy number.

It is a super-2 number, since 2×33686667036² (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 (33686667037) 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, 327436 + ... + 417836.

It is an arithmetic number, because the mean of its divisors is an integer number (1291573374).

Almost surely, 2^33686667036 is an apocalyptic number.

33686667036 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33686667036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46496641464).

33686667036 is an abundant number, since it is smaller than the sum of its proper divisors (59306615892).

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

33686667036 is a wasteful number, since it uses less digits than its factorization.

33686667036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91363 (or 91358 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 54.

The spelling of 33686667036 in words is "thirty-three billion, six hundred eighty-six million, six hundred sixty-seven thousand, thirty-six".