261793242003 has 16 divisors (see below), whose sum is σ = 351485920256. Its totient is φ = 173315993760.

The previous prime is 261793241953. The next prime is 261793242023. The reversal of 261793242003 is 300242397162.

It is not a de Polignac number, because 261793242003 - 2¹² = 261793237907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261793242023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650238 + ... + 972828.

It is an arithmetic number, because the mean of its divisors is an integer number (21967870016).

Almost surely, 2^261793242003 is an apocalyptic number.

261793242003 is a deficient number, since it is larger than the sum of its proper divisors (89692678253).

261793242003 is a wasteful number, since it uses less digits than its factorization.

261793242003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324474.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 261793242003 in words is "two hundred sixty-one billion, seven hundred ninety-three million, two hundred forty-two thousand, three".