10781110261 has 4 divisors (see below), whose sum is σ = 10816228192. Its totient is φ = 10745992332.

The previous prime is 10781110247. The next prime is 10781110273. The reversal of 10781110261 is 16201118701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10781110261 - 2¹⁹ = 10780585973 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 (10781114261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17558505 + ... + 17559118.

It is an arithmetic number, because the mean of its divisors is an integer number (2704057048).

Almost surely, 2^10781110261 is an apocalyptic number.

It is an amenable number.

10781110261 is a deficient number, since it is larger than the sum of its proper divisors (35117931).

10781110261 is an equidigital number, since it uses as much as digits as its factorization.

10781110261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35117930.

The product of its (nonzero) digits is 672, while the sum is 28.

Adding to 10781110261 its reverse (16201118701), we get a palindrome (26982228962).

The spelling of 10781110261 in words is "ten billion, seven hundred eighty-one million, one hundred ten thousand, two hundred sixty-one".