33633420440 has 16 divisors (see below), whose sum is σ = 75675196080. Its totient is φ = 13453368160.

The previous prime is 33633420427. The next prime is 33633420473. The reversal of 33633420440 is 4402433633.

It is a super-2 number, since 2×33633420440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33633420397 and 33633420406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420417716 + ... + 420417795.

It is an arithmetic number, because the mean of its divisors is an integer number (4729699755).

Almost surely, 2^33633420440 is an apocalyptic number.

It is an amenable number.

33633420440 is an abundant number, since it is smaller than the sum of its proper divisors (42041775640).

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

33633420440 is a wasteful number, since it uses less digits than its factorization.

33633420440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840835522 (or 840835518 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

The spelling of 33633420440 in words is "thirty-three billion, six hundred thirty-three million, four hundred twenty thousand, four hundred forty".