10518766957 has 4 divisors (see below), whose sum is σ = 10519113276. Its totient is φ = 10518420640.

The previous prime is 10518766879. The next prime is 10518766967. The reversal of 10518766957 is 75966781501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9900449001 + 618317956 = 99501^2 + 24866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10518766957 is a prime.

It is a super-2 number, since 2×10518766957² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10518766898 and 10518766907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10518766967) 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, 122698 + ... + 189979.

It is an arithmetic number, because the mean of its divisors is an integer number (2629778319).

Almost surely, 2^10518766957 is an apocalyptic number.

It is an amenable number.

10518766957 is a deficient number, since it is larger than the sum of its proper divisors (346319).

10518766957 is an equidigital number, since it uses as much as digits as its factorization.

10518766957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346318.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 10518766957 in words is "ten billion, five hundred eighteen million, seven hundred sixty-six thousand, nine hundred fifty-seven".