15343645406447 has 4 divisors (see below), whose sum is σ = 15359035222296. Its totient is φ = 15328255590600.

The previous prime is 15343645406429. The next prime is 15343645406489. The reversal of 15343645406447 is 74460454634351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15343645406447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15343645406392 and 15343645406401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15343645409447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7694906429 + ... + 7694908422.

It is an arithmetic number, because the mean of its divisors is an integer number (3839758805574).

Almost surely, 2^{15343645406447} is an apocalyptic number.

15343645406447 is a deficient number, since it is larger than the sum of its proper divisors (15389815849).

15343645406447 is an equidigital number, since it uses as much as digits as its factorization.

15343645406447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389815848.

The product of its (nonzero) digits is 58060800, while the sum is 56.

The spelling of 15343645406447 in words is "fifteen trillion, three hundred forty-three billion, six hundred forty-five million, four hundred six thousand, four hundred forty-seven".