2780330480838 has 128 divisors (see below), whose sum is σ = 6927509836800. Its totient is φ = 821403016704.

The previous prime is 2780330480803. The next prime is 2780330480839. The reversal of 2780330480838 is 8380840330872.

2780330480838 is a `hidden beast` number, since 2 + 7 + 80 + 3 + 3 + 0 + 480 + 83 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780330480839) 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 63 ways as a sum of consecutive naturals, for example, 2435556 + ... + 3390072.

It is an arithmetic number, because the mean of its divisors is an integer number (54121170600).

Almost surely, 2^{2780330480838} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780330480838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3463754918400).

2780330480838 is an abundant number, since it is smaller than the sum of its proper divisors (4147179355962).

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

2780330480838 is a wasteful number, since it uses less digits than its factorization.

2780330480838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954731 (or 954725 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 2780330480838 in words is "two trillion, seven hundred eighty billion, three hundred thirty million, four hundred eighty thousand, eight hundred thirty-eight".