10513491761 has 4 divisors (see below), whose sum is σ = 10621878372. Its totient is φ = 10405105152.

The previous prime is 10513491733. The next prime is 10513491763. The reversal of 10513491761 is 16719431501.

10513491761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4694853361 + 5818638400 = 68519^2 + 76280^2 .

It is a cyclic number.

It is not a de Polignac number, because 10513491761 - 2¹⁰ = 10513490737 is a prime.

It is a super-2 number, since 2×10513491761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10513491763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54193160 + ... + 54193353.

It is an arithmetic number, because the mean of its divisors is an integer number (2655469593).

Almost surely, 2^10513491761 is an apocalyptic number.

It is an amenable number.

10513491761 is a deficient number, since it is larger than the sum of its proper divisors (108386611).

10513491761 is an equidigital number, since it uses as much as digits as its factorization.

10513491761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108386610.

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 10513491761 in words is "ten billion, five hundred thirteen million, four hundred ninety-one thousand, seven hundred sixty-one".