33423640446 has 16 divisors (see below), whose sum is σ = 76396892544. Its totient is φ = 9549611544.

The previous prime is 33423640399. The next prime is 33423640447. The reversal of 33423640446 is 64404632433.

It is a happy number.

It is a super-2 number, since 2×33423640446² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33423640447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397900440 + ... + 397900523.

It is an arithmetic number, because the mean of its divisors is an integer number (4774805784).

Almost surely, 2^33423640446 is an apocalyptic number.

33423640446 is an abundant number, since it is smaller than the sum of its proper divisors (42973252098).

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

33423640446 is a wasteful number, since it uses less digits than its factorization.

33423640446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795800975.

The product of its (nonzero) digits is 497664, while the sum is 39.

The spelling of 33423640446 in words is "thirty-three billion, four hundred twenty-three million, six hundred forty thousand, four hundred forty-six".