261562670065134 has 24 divisors (see below), whose sum is σ = 566723291473560. Its totient is φ = 87186914688528.

The previous prime is 261562670065051. The next prime is 261562670065153. The reversal of 261562670065134 is 431560076265162.

261562670065134 is a `hidden beast` number, since 2 + 6 + 1 + 5 + 62 + 67 + 0 + 0 + 6 + 513 + 4 = 666.

It is a congruent number.

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, 50984377 + ... + 55879620.

It is an arithmetic number, because the mean of its divisors is an integer number (23613470478065).

Almost surely, 2^{261562670065134} is an apocalyptic number.

261562670065134 is an abundant number, since it is smaller than the sum of its proper divisors (305160621408426).

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

261562670065134 is a wasteful number, since it uses less digits than its factorization.

261562670065134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106999984 (or 106999981 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 261562670065134 in words is "two hundred sixty-one trillion, five hundred sixty-two billion, six hundred seventy million, sixty-five thousand, one hundred thirty-four".