261145234303 has 8 divisors (see below), whose sum is σ = 261982691600. Its totient is φ = 260308287360.

The previous prime is 261145234297. The next prime is 261145234373. The reversal of 261145234303 is 303432541162.

It is a happy number.

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-261145234303 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 (261145234373) 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 7 ways as a sum of consecutive naturals, for example, 910951 + ... + 1162807.

It is an arithmetic number, because the mean of its divisors is an integer number (32747836450).

Almost surely, 2^261145234303 is an apocalyptic number.

261145234303 is a deficient number, since it is larger than the sum of its proper divisors (837457297).

261145234303 is a wasteful number, since it uses less digits than its factorization.

261145234303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255177.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 261145234303 its reverse (303432541162), we get a palindrome (564577775465).

The spelling of 261145234303 in words is "two hundred sixty-one billion, one hundred forty-five million, two hundred thirty-four thousand, three hundred three".