261763389374113 has 8 divisors (see below), whose sum is σ = 286184919042720. Its totient is φ = 237446002690080.

The previous prime is 261763389374041. The next prime is 261763389374159. The reversal of 261763389374113 is 311473983367162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261763389374113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261763389374213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26035740883 + ... + 26035750936.

It is an arithmetic number, because the mean of its divisors is an integer number (35773114880340).

Almost surely, 2^{261763389374113} is an apocalyptic number.

It is an amenable number.

261763389374113 is a deficient number, since it is larger than the sum of its proper divisors (24421529668607).

261763389374113 is a wasteful number, since it uses less digits than its factorization.

261763389374113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52071492287.

The product of its digits is 82301184, while the sum is 64.

The spelling of 261763389374113 in words is "two hundred sixty-one trillion, seven hundred sixty-three billion, three hundred eighty-nine million, three hundred seventy-four thousand, one hundred thirteen".