261675142423073 has 16 divisors (see below), whose sum is σ = 273823459553280. Its totient is φ = 249591331248336.

The previous prime is 261675142423039. The next prime is 261675142423109. The reversal of 261675142423073 is 370324241576162.

It is a cyclic number.

It is not a de Polignac number, because 261675142423073 - 2¹⁰ = 261675142422049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261675142423273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44356886 + ... + 49908752.

It is an arithmetic number, because the mean of its divisors is an integer number (17113966222080).

Almost surely, 2^{261675142423073} is an apocalyptic number.

261675142423073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

261675142423073 is a deficient number, since it is larger than the sum of its proper divisors (12148317130207).

261675142423073 is a wasteful number, since it uses less digits than its factorization.

261675142423073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557676.

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 261675142423073 in words is "two hundred sixty-one trillion, six hundred seventy-five billion, one hundred forty-two million, four hundred twenty-three thousand, seventy-three".