33421566440 has 64 divisors (see below), whose sum is σ = 75521160000. Its totient is φ = 13311406080.

The previous prime is 33421566439. The next prime is 33421566463. The reversal of 33421566440 is 4466512433.

It is a super-2 number, since 2×33421566440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33421566394 and 33421566403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10253531 + ... + 10256789.

It is an arithmetic number, because the mean of its divisors is an integer number (1180018125).

Almost surely, 2^33421566440 is an apocalyptic number.

It is an amenable number.

33421566440 is an abundant number, since it is smaller than the sum of its proper divisors (42099593560).

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

33421566440 is a wasteful number, since it uses less digits than its factorization.

33421566440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 33421566440 in words is "thirty-three billion, four hundred twenty-one million, five hundred sixty-six thousand, four hundred forty".