13124504665 has 16 divisors (see below), whose sum is σ = 15792663312. Its totient is φ = 10470805504.

The previous prime is 13124504623. The next prime is 13124504671. The reversal of 13124504665 is 56640542131.

It can be written as a sum of positive squares in 8 ways, for example, as 558991449 + 12565513216 = 23643^2 + 112096^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124504665 - 2⁹ = 13124504153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4724757 + ... + 4727533.

It is an arithmetic number, because the mean of its divisors is an integer number (987041457).

Almost surely, 2^13124504665 is an apocalyptic number.

It is an amenable number.

13124504665 is a deficient number, since it is larger than the sum of its proper divisors (2668158647).

13124504665 is a wasteful number, since it uses less digits than its factorization.

13124504665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 13124504665 in words is "thirteen billion, one hundred twenty-four million, five hundred four thousand, six hundred sixty-five".