2779867494155 has 4 divisors (see below), whose sum is σ = 3335840992992. Its totient is φ = 2223893995320.

The previous prime is 2779867494149. The next prime is 2779867494169. The reversal of 2779867494155 is 5514947689772.

It is a happy number.

2779867494155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2779867494155 - 2⁸ = 2779867493899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277986749411 + ... + 277986749420.

It is an arithmetic number, because the mean of its divisors is an integer number (833960248248).

Almost surely, 2^{2779867494155} is an apocalyptic number.

2779867494155 is a deficient number, since it is larger than the sum of its proper divisors (555973498837).

2779867494155 is an equidigital number, since it uses as much as digits as its factorization.

2779867494155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555973498836.

The product of its digits is 1066867200, while the sum is 74.

The spelling of 2779867494155 in words is "two trillion, seven hundred seventy-nine billion, eight hundred sixty-seven million, four hundred ninety-four thousand, one hundred fifty-five".