2103791212878 has 16 divisors (see below), whose sum is σ = 4352671475280. Its totient is φ = 677082229376.

The previous prime is 2103791212753. The next prime is 2103791212951. The reversal of 2103791212878 is 8782121973012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103791212878.

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, 6045376875 + ... + 6045377222.

It is an arithmetic number, because the mean of its divisors is an integer number (272041967205).

Almost surely, 2^{2103791212878} is an apocalyptic number.

2103791212878 is an abundant number, since it is smaller than the sum of its proper divisors (2248880262402).

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

2103791212878 is a wasteful number, since it uses less digits than its factorization.

2103791212878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12090754131.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 2103791212878 in words is "two trillion, one hundred three billion, seven hundred ninety-one million, two hundred twelve thousand, eight hundred seventy-eight".