2778338919782 has 16 divisors (see below), whose sum is σ = 4302699275904. Its totient is φ = 1344121560000.

The previous prime is 2778338919749. The next prime is 2778338919799. The reversal of 2778338919782 is 2879198338772.

2778338919782 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 7 ways as a sum of consecutive naturals, for example, 3576719 + ... + 4283642.

It is an arithmetic number, because the mean of its divisors is an integer number (268918704744).

Almost surely, 2^{2778338919782} is an apocalyptic number.

2778338919782 is a deficient number, since it is larger than the sum of its proper divisors (1524360356122).

2778338919782 is a wasteful number, since it uses less digits than its factorization.

2778338919782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7866095.

The product of its digits is 512096256, while the sum is 74.

The spelling of 2778338919782 in words is "two trillion, seven hundred seventy-eight billion, three hundred thirty-eight million, nine hundred nineteen thousand, seven hundred eighty-two".