33213900680 has 32 divisors (see below), whose sum is σ = 77308219800. Its totient is φ = 12827437056.

The previous prime is 33213900673. The next prime is 33213900683. The reversal of 33213900680 is 8600931233.

It can be written as a sum of positive squares in 4 ways, for example, as 21268722244 + 11945178436 = 145838^2 + 109294^2 .

It is a super-2 number, since 2×33213900680² (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 33213900680.

It is not an unprimeable number, because it can be changed into a prime (33213900683) 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, 14315177 + ... + 14317496.

Almost surely, 2^33213900680 is an apocalyptic number.

It is an amenable number.

33213900680 is an abundant number, since it is smaller than the sum of its proper divisors (44094319120).

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

33213900680 is a wasteful number, since it uses less digits than its factorization.

33213900680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28632713 (or 28632709 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 33213900680 in words is "thirty-three billion, two hundred thirteen million, nine hundred thousand, six hundred eighty".