33344421440 has 56 divisors (see below), whose sum is σ = 86619722112. Its totient is φ = 12125242880.

The previous prime is 33344421437. The next prime is 33344421491. The reversal of 33344421440 is 4412444333.

It is a super-2 number, since 2×33344421440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 33344421397 and 33344421406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4732904 + ... + 4739943.

It is an arithmetic number, because the mean of its divisors is an integer number (1546780752).

Almost surely, 2^33344421440 is an apocalyptic number.

It is an amenable number.

33344421440 is an abundant number, since it is smaller than the sum of its proper divisors (53275300672).

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

33344421440 is a wasteful number, since it uses less digits than its factorization.

33344421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9472875 (or 9472865 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 33344421440 its reverse (4412444333), we get a palindrome (37756865773).

The spelling of 33344421440 in words is "thirty-three billion, three hundred forty-four million, four hundred twenty-one thousand, four hundred forty".