10931718708557 has 4 divisors (see below), whose sum is σ = 10960562293920. Its totient is φ = 10902875123196.

The previous prime is 10931718708539. The next prime is 10931718708571. The reversal of 10931718708557 is 75580781713901.

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 a de Polignac number, because none of the positive numbers 2^k-10931718708557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10931718708557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10931718708517) 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, 14421792113 + ... + 14421792870.

It is an arithmetic number, because the mean of its divisors is an integer number (2740140573480).

Almost surely, 2^{10931718708557} is an apocalyptic number.

It is an amenable number.

10931718708557 is a deficient number, since it is larger than the sum of its proper divisors (28843585363).

10931718708557 is an equidigital number, since it uses as much as digits as its factorization.

10931718708557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28843585362.

The product of its (nonzero) digits is 14817600, while the sum is 62.

The spelling of 10931718708557 in words is "ten trillion, nine hundred thirty-one billion, seven hundred eighteen million, seven hundred eight thousand, five hundred fifty-seven".