33378400338 has 32 divisors (see below), whose sum is σ = 73121045760. Its totient is φ = 10110562560.

The previous prime is 33378400337. The next prime is 33378400343. The reversal of 33378400338 is 83300487333.

It is a super-2 number, since 2×33378400338² (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 33378400338.

It is not an unprimeable number, because it can be changed into a prime (33378400337) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5639098 + ... + 5645013.

It is an arithmetic number, because the mean of its divisors is an integer number (2285032680).

Almost surely, 2^33378400338 is an apocalyptic number.

33378400338 is an abundant number, since it is smaller than the sum of its proper divisors (39742645422).

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

33378400338 is a wasteful number, since it uses less digits than its factorization.

33378400338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11284162.

The product of its (nonzero) digits is 435456, while the sum is 42.

The spelling of 33378400338 in words is "thirty-three billion, three hundred seventy-eight million, four hundred thousand, three hundred thirty-eight".