10931861345 has 8 divisors (see below), whose sum is σ = 13134062760. Its totient is φ = 8734936320.

The previous prime is 10931861341. The next prime is 10931861357. The reversal of 10931861345 is 54316813901.

It can be written as a sum of positive squares in 4 ways, for example, as 2172398881 + 8759462464 = 46609^2 + 93592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10931861345 - 2² = 10931861341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10931861341) 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 7 ways as a sum of consecutive naturals, for example, 1314536 + ... + 1322825.

It is an arithmetic number, because the mean of its divisors is an integer number (1641757845).

Almost surely, 2^10931861345 is an apocalyptic number.

It is an amenable number.

10931861345 is a deficient number, since it is larger than the sum of its proper divisors (2202201415).

10931861345 is an equidigital number, since it uses as much as digits as its factorization.

10931861345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638195.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 10931861345 in words is "ten billion, nine hundred thirty-one million, eight hundred sixty-one thousand, three hundred forty-five".