2784538783920 has 40 divisors (see below), whose sum is σ = 8632070230896. Its totient is φ = 742543675648.

The previous prime is 2784538783907. The next prime is 2784538783937. The reversal of 2784538783920 is 293878354872.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801122227 + ... + 5801122706.

Almost surely, 2^{2784538783920} is an apocalyptic number.

2784538783920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2784538783920 is an abundant number, since it is smaller than the sum of its proper divisors (5847531446976).

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

2784538783920 is a wasteful number, since it uses less digits than its factorization.

2784538783920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11602244949 (or 11602244943 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 66.

The spelling of 2784538783920 in words is "two trillion, seven hundred eighty-four billion, five hundred thirty-eight million, seven hundred eighty-three thousand, nine hundred twenty".