33989932660 has 12 divisors (see below), whose sum is σ = 71378858628. Its totient is φ = 13595973056.

The previous prime is 33989932649. The next prime is 33989932661. The reversal of 33989932660 is 6623998933.

It can be written as a sum of positive squares in 2 ways, for example, as 21919394704 + 12070537956 = 148052^2 + 109866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 33989932595 and 33989932604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33989932661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849748297 + ... + 849748336.

It is an arithmetic number, because the mean of its divisors is an integer number (5948238219).

Almost surely, 2^33989932660 is an apocalyptic number.

It is an amenable number.

33989932660 is an abundant number, since it is smaller than the sum of its proper divisors (37388925968).

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

33989932660 is a wasteful number, since it uses less digits than its factorization.

33989932660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699496642 (or 1699496640 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 58.

The spelling of 33989932660 in words is "thirty-three billion, nine hundred eighty-nine million, nine hundred thirty-two thousand, six hundred sixty".