12546553756405 has 8 divisors (see below), whose sum is σ = 15710467312512. Its totient is φ = 9600841135248.

The previous prime is 12546553756397. The next prime is 12546553756409. The reversal of 12546553756405 is 50465735564521.

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 12546553756405 - 2³ = 12546553756397 is a prime.

It is a super-2 number, since 2×12546553756405² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12546553756405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12546553756409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54550233609 + ... + 54550233838.

It is an arithmetic number, because the mean of its divisors is an integer number (1963808414064).

Almost surely, 2^{12546553756405} is an apocalyptic number.

It is an amenable number.

12546553756405 is a deficient number, since it is larger than the sum of its proper divisors (3163913556107).

12546553756405 is a wasteful number, since it uses less digits than its factorization.

12546553756405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109100467475.

The product of its (nonzero) digits is 75600000, while the sum is 58.

The spelling of 12546553756405 in words is "twelve trillion, five hundred forty-six billion, five hundred fifty-three million, seven hundred fifty-six thousand, four hundred five".