261441373020010 has 16 divisors (see below), whose sum is σ = 470613942865800. Its totient is φ = 104572222223616.

The previous prime is 261441373019927. The next prime is 261441373020029. The reversal of 261441373020010 is 10020373144162.

It can be written as a sum of positive squares in 4 ways, for example, as 261368429273449 + 72943746561 = 16166893^2 + 270081^2 .

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, 540619275 + ... + 541102654.

Almost surely, 2^{261441373020010} is an apocalyptic number.

261441373020010 is a deficient number, since it is larger than the sum of its proper divisors (209172569845790).

261441373020010 is a wasteful number, since it uses less digits than its factorization.

261441373020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081746105.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 261441373020010 in words is "two hundred sixty-one trillion, four hundred forty-one billion, three hundred seventy-three million, twenty thousand, ten".