2778039839142 has 96 divisors (see below), whose sum is σ = 6131491382016. Its totient is φ = 908914176000.

The previous prime is 2778039839087. The next prime is 2778039839221. The reversal of 2778039839142 is 2419389308772.

2778039839142 is a `hidden beast` number, since 2 + 7 + 78 + 0 + 398 + 39 + 142 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2778039839142.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 97690558 + ... + 97718990.

It is an arithmetic number, because the mean of its divisors is an integer number (63869701896).

Almost surely, 2^{2778039839142} is an apocalyptic number.

2778039839142 is an abundant number, since it is smaller than the sum of its proper divisors (3353451542874).

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

2778039839142 is a wasteful number, since it uses less digits than its factorization.

2778039839142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29006 (or 29003 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 2778039839142 in words is "two trillion, seven hundred seventy-eight billion, thirty-nine million, eight hundred thirty-nine thousand, one hundred forty-two".