12653520465 has 8 divisors (see below), whose sum is σ = 20245632768. Its totient is φ = 6748544240.

The previous prime is 12653520389. The next prime is 12653520521. The reversal of 12653520465 is 56402535621.

12653520465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12653520465 - 2¹¹ = 12653518417 is a prime.

It is a super-2 number, since 2×12653520465² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 421784001 + ... + 421784030.

It is an arithmetic number, because the mean of its divisors is an integer number (2530704096).

Almost surely, 2^12653520465 is an apocalyptic number.

12653520465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12653520465 is a deficient number, since it is larger than the sum of its proper divisors (7592112303).

12653520465 is an equidigital number, since it uses as much as digits as its factorization.

12653520465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843568039.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 12653520465 in words is "twelve billion, six hundred fifty-three million, five hundred twenty thousand, four hundred sixty-five".