12453655521 has 8 divisors (see below), whose sum is σ = 16610709664. Its totient is φ = 8299519200.

The previous prime is 12453655519. The next prime is 12453655523. The reversal of 12453655521 is 12555635421.

It is an interprime number because it is at equal distance from previous prime (12453655519) and next prime (12453655523).

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

It is not a de Polignac number, because 12453655521 - 2¹ = 12453655519 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12453655521.

It is not an unprimeable number, because it can be changed into a prime (12453655523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719476 + ... + 736581.

It is an arithmetic number, because the mean of its divisors is an integer number (2076338708).

Almost surely, 2^12453655521 is an apocalyptic number.

It is an amenable number.

12453655521 is a deficient number, since it is larger than the sum of its proper divisors (4157054143).

12453655521 is a wasteful number, since it uses less digits than its factorization.

12453655521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458911.

The product of its digits is 180000, while the sum is 39.

The spelling of 12453655521 in words is "twelve billion, four hundred fifty-three million, six hundred fifty-five thousand, five hundred twenty-one".