10513704661 has 4 divisors (see below), whose sum is σ = 10770136524. Its totient is φ = 10257272800.

The previous prime is 10513704629. The next prime is 10513704667. The reversal of 10513704661 is 16640731501.

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 3746174436 + 6767530225 = 61206^2 + 82265^2 .

It is a cyclic number.

It is not a de Polignac number, because 10513704661 - 2⁵ = 10513704629 is a prime.

It is a super-2 number, since 2×10513704661² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10513704667) 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, 128215870 + ... + 128215951.

It is an arithmetic number, because the mean of its divisors is an integer number (2692534131).

Almost surely, 2^10513704661 is an apocalyptic number.

It is an amenable number.

10513704661 is a deficient number, since it is larger than the sum of its proper divisors (256431863).

10513704661 is an equidigital number, since it uses as much as digits as its factorization.

10513704661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256431862.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 10513704661 in words is "ten billion, five hundred thirteen million, seven hundred four thousand, six hundred sixty-one".