261675142423103 has 4 divisors (see below), whose sum is σ = 262106238210240. Its totient is φ = 261244046635968.

The previous prime is 261675142423039. The next prime is 261675142423109. The reversal of 261675142423103 is 301324241576162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 261675142423103 - 2⁶ = 261675142423039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261675142423109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215547892658 + ... + 215547893871.

It is an arithmetic number, because the mean of its divisors is an integer number (65526559552560).

Almost surely, 2^{261675142423103} is an apocalyptic number.

261675142423103 is a deficient number, since it is larger than the sum of its proper divisors (431095787137).

261675142423103 is an equidigital number, since it uses as much as digits as its factorization.

261675142423103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431095787136.

The product of its (nonzero) digits is 1451520, while the sum is 47.

Adding to 261675142423103 its reverse (301324241576162), we get a palindrome (562999383999265).

The spelling of 261675142423103 in words is "two hundred sixty-one trillion, six hundred seventy-five billion, one hundred forty-two million, four hundred twenty-three thousand, one hundred three".