10515656065 has 8 divisors (see below), whose sum is σ = 12856877928. Its totient is φ = 8253797760.

The previous prime is 10515656027. The next prime is 10515656069. The reversal of 10515656065 is 56065651501.

It can be written as a sum of positive squares in 4 ways, for example, as 2320156224 + 8195499841 = 48168^2 + 90529^2 .

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

It is not a de Polignac number, because 10515656065 - 2¹³ = 10515647873 is a prime.

It is a super-2 number, since 2×10515656065² (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 (10515656069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19840596 + ... + 19841125.

It is an arithmetic number, because the mean of its divisors is an integer number (1607109741).

Almost surely, 2^10515656065 is an apocalyptic number.

It is an amenable number.

10515656065 is a deficient number, since it is larger than the sum of its proper divisors (2341221863).

10515656065 is an equidigital number, since it uses as much as digits as its factorization.

10515656065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39681779.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 10515656065 in words is "ten billion, five hundred fifteen million, six hundred fifty-six thousand, sixty-five".