261824882146 has 16 divisors (see below), whose sum is σ = 395015138784. Its totient is φ = 130155259104.

The previous prime is 261824882089. The next prime is 261824882219. The reversal of 261824882146 is 641288428162.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 261824882093 and 261824882102.

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, 271371 + ... + 772846.

It is an arithmetic number, because the mean of its divisors is an integer number (24688446174).

Almost surely, 2^261824882146 is an apocalyptic number.

261824882146 is a deficient number, since it is larger than the sum of its proper divisors (133190256638).

261824882146 is a wasteful number, since it uses less digits than its factorization.

261824882146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044945.

The product of its digits is 2359296, while the sum is 52.

The spelling of 261824882146 in words is "two hundred sixty-one billion, eight hundred twenty-four million, eight hundred eighty-two thousand, one hundred forty-six".