261236211126050 has 24 divisors (see below), whose sum is σ = 486024552579492. Its totient is φ = 104467559744000.

The previous prime is 261236211126041. The next prime is 261236211126073. The reversal of 261236211126050 is 50621112632162.

It can be written as a sum of positive squares in 6 ways, for example, as 96621999463201 + 164614211662849 = 9829649^2 + 12830207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 261236211125995 and 261236211126013.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 672921671 + ... + 673309770.

Almost surely, 2^{261236211126050} is an apocalyptic number.

261236211126050 is a deficient number, since it is larger than the sum of its proper divisors (224788341453442).

261236211126050 is a wasteful number, since it uses less digits than its factorization.

261236211126050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346235334 (or 1346235329 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 261236211126050 in words is "two hundred sixty-one trillion, two hundred thirty-six billion, two hundred eleven million, one hundred twenty-six thousand, fifty".