2778489324912 has 80 divisors (see below), whose sum is σ = 8211767627520. Its totient is φ = 793020996096.

The previous prime is 2778489324899. The next prime is 2778489324929. The reversal of 2778489324912 is 2194239848772.

2778489324912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4018362 + ... + 4658777.

It is an arithmetic number, because the mean of its divisors is an integer number (102647095344).

Almost surely, 2^{2778489324912} is an apocalyptic number.

It is an amenable number.

2778489324912 is an abundant number, since it is smaller than the sum of its proper divisors (5433278302608).

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

2778489324912 is a wasteful number, since it uses less digits than its factorization.

2778489324912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678110 (or 8678104 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 66.

The spelling of 2778489324912 in words is "two trillion, seven hundred seventy-eight billion, four hundred eighty-nine million, three hundred twenty-four thousand, nine hundred twelve".