33855399380 has 48 divisors (see below), whose sum is σ = 77609435904. Its totient is φ = 12303150720.

The previous prime is 33855399373. The next prime is 33855399397. The reversal of 33855399380 is 8399355833.

It is a happy number.

It is a super-2 number, since 2×33855399380² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 299654 + ... + 396866.

It is an arithmetic number, because the mean of its divisors is an integer number (1616863248).

Almost surely, 2^33855399380 is an apocalyptic number.

It is an amenable number.

33855399380 is an abundant number, since it is smaller than the sum of its proper divisors (43754036524).

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

33855399380 is a wasteful number, since it uses less digits than its factorization.

33855399380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98816 (or 98814 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 33855399380 in words is "thirty-three billion, eight hundred fifty-five million, three hundred ninety-nine thousand, three hundred eighty".