2878651541161 has 4 divisors (see below), whose sum is σ = 3140347135824. Its totient is φ = 2616955946500.

The previous prime is 2878651541153. The next prime is 2878651541167. The reversal of 2878651541161 is 1611451568782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2878651541161 - 2³ = 2878651541153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2878651541167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 130847797315 + ... + 130847797336.

It is an arithmetic number, because the mean of its divisors is an integer number (785086783956).

Almost surely, 2^{2878651541161} is an apocalyptic number.

It is an amenable number.

2878651541161 is a deficient number, since it is larger than the sum of its proper divisors (261695594663).

2878651541161 is a wasteful number, since it uses less digits than its factorization.

2878651541161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261695594662.

The product of its digits is 3225600, while the sum is 55.

The spelling of 2878651541161 in words is "two trillion, eight hundred seventy-eight billion, six hundred fifty-one million, five hundred forty-one thousand, one hundred sixty-one".