2561146143 has 8 divisors (see below), whose sum is σ = 3415501056. Its totient is φ = 1707111000.

The previous prime is 2561146129. The next prime is 2561146171. The reversal of 2561146143 is 3416411652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2561146143 - 2⁵ = 2561146111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561148143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60583 + ... + 93768.

It is an arithmetic number, because the mean of its divisors is an integer number (426937632).

Almost surely, 2^2561146143 is an apocalyptic number.

2561146143 is a deficient number, since it is larger than the sum of its proper divisors (854354913).

2561146143 is a wasteful number, since it uses less digits than its factorization.

2561146143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159885.

The product of its digits is 17280, while the sum is 33.

The square root of 2561146143 is about 50607.7676152584. The cubic root of 2561146143 is about 1368.1848807317.

Adding to 2561146143 its reverse (3416411652), we get a palindrome (5977557795).

The spelling of 2561146143 in words is "two billion, five hundred sixty-one million, one hundred forty-six thousand, one hundred forty-three".