33780810140 has 48 divisors (see below), whose sum is σ = 88444306944. Its totient is φ = 10529083200.

The previous prime is 33780810139. The next prime is 33780810149. The reversal of 33780810140 is 4101808733.

It is a super-2 number, since 2×33780810140² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 33780810140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33780810149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10966256 + ... + 10969335.

It is an arithmetic number, because the mean of its divisors is an integer number (1842589728).

Almost surely, 2^33780810140 is an apocalyptic number.

It is an amenable number.

33780810140 is an abundant number, since it is smaller than the sum of its proper divisors (54663496804).

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

33780810140 is a wasteful number, since it uses less digits than its factorization.

33780810140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21935618 (or 21935616 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 33780810140 in words is "thirty-three billion, seven hundred eighty million, eight hundred ten thousand, one hundred forty".