13261453465508 has 24 divisors (see below), whose sum is σ = 23956347980544. Its totient is φ = 6416785720800.

The previous prime is 13261453465489. The next prime is 13261453465511. The reversal of 13261453465508 is 80556435416231.

It is a super-2 number, since 2×13261453465508² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13261453465508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21885578 + ... + 22483358.

It is an arithmetic number, because the mean of its divisors is an integer number (998181165856).

Almost surely, 2^{13261453465508} is an apocalyptic number.

It is an amenable number.

13261453465508 is a deficient number, since it is larger than the sum of its proper divisors (10694894515036).

13261453465508 is a wasteful number, since it uses less digits than its factorization.

13261453465508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776723 (or 776721 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 13261453465508 in words is "thirteen trillion, two hundred sixty-one billion, four hundred fifty-three million, four hundred sixty-five thousand, five hundred eight".