12405521453 has 8 divisors (see below), whose sum is σ = 13380074400. Its totient is φ = 11433865968.

The previous prime is 12405521437. The next prime is 12405521467. The reversal of 12405521453 is 35412550421.

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

It is a cyclic number.

It is not a de Polignac number, because 12405521453 - 2⁴ = 12405521437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405521423) 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, 715463 + ... + 732596.

It is an arithmetic number, because the mean of its divisors is an integer number (1672509300).

Almost surely, 2^12405521453 is an apocalyptic number.

12405521453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12405521453 is a deficient number, since it is larger than the sum of its proper divisors (974552947).

12405521453 is a wasteful number, since it uses less digits than its factorization.

12405521453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448731.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 12405521453 in words is "twelve billion, four hundred five million, five hundred twenty-one thousand, four hundred fifty-three".