2541611778 has 16 divisors (see below), whose sum is σ = 5089692000. Its totient is φ = 846125856.

The previous prime is 2541611759. The next prime is 2541611783. The reversal of 2541611778 is 8771161452.

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, 264403 + ... + 273846.

It is an arithmetic number, because the mean of its divisors is an integer number (318105750).

Almost surely, 2^2541611778 is an apocalyptic number.

2541611778 is an abundant number, since it is smaller than the sum of its proper divisors (2548080222).

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

2541611778 is a wasteful number, since it uses less digits than its factorization.

2541611778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539041.

The product of its digits is 94080, while the sum is 42.

The square root of 2541611778 is about 50414.4005022375. The cubic root of 2541611778 is about 1364.6975277415.

The spelling of 2541611778 in words is "two billion, five hundred forty-one million, six hundred eleven thousand, seven hundred seventy-eight".