261473500500756 has 12 divisors (see below), whose sum is σ = 610104834501792. Its totient is φ = 87157833500248.

The previous prime is 261473500500713. The next prime is 261473500500763. The reversal of 261473500500756 is 657005005374162.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 261473500500699 and 261473500500708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10894729187520 + ... + 10894729187543.

It is an arithmetic number, because the mean of its divisors is an integer number (50842069541816).

Almost surely, 2^{261473500500756} is an apocalyptic number.

It is an amenable number.

261473500500756 is an abundant number, since it is smaller than the sum of its proper divisors (348631334001036).

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

261473500500756 is a wasteful number, since it uses less digits than its factorization.

261473500500756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21789458375070 (or 21789458375068 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 51.

The spelling of 261473500500756 in words is "two hundred sixty-one trillion, four hundred seventy-three billion, five hundred million, five hundred thousand, seven hundred fifty-six".