33379433680 has 20 divisors (see below), whose sum is σ = 77607183492. Its totient is φ = 13351773440.

The previous prime is 33379433677. The next prime is 33379433777. The reversal of 33379433680 is 8633497333.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5265534096 + 28113899584 = 72564^2 + 167672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×33379433680² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208621381 + ... + 208621540.

Almost surely, 2^33379433680 is an apocalyptic number.

It is an amenable number.

33379433680 is an abundant number, since it is smaller than the sum of its proper divisors (44227749812).

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

33379433680 is a wasteful number, since it uses less digits than its factorization.

33379433680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417242934 (or 417242928 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 49.

The spelling of 33379433680 in words is "thirty-three billion, three hundred seventy-nine million, four hundred thirty-three thousand, six hundred eighty".