261553314341163 has 8 divisors (see below), whose sum is σ = 375563733413008. Its totient is φ = 160955885748384.

The previous prime is 261553314341149. The next prime is 261553314341227. The reversal of 261553314341163 is 361143413355162.

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

It is not a de Polignac number, because 261553314341163 - 2²² = 261553310146859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261553314341063) 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, 3353247619720 + ... + 3353247619797.

It is an arithmetic number, because the mean of its divisors is an integer number (46945466676626).

Almost surely, 2^{261553314341163} is an apocalyptic number.

261553314341163 is a deficient number, since it is larger than the sum of its proper divisors (114010419071845).

261553314341163 is a wasteful number, since it uses less digits than its factorization.

261553314341163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6706495239533.

The product of its digits is 2332800, while the sum is 48.

The spelling of 261553314341163 in words is "two hundred sixty-one trillion, five hundred fifty-three billion, three hundred fourteen million, three hundred forty-one thousand, one hundred sixty-three".