15666342632345 has 8 divisors (see below), whose sum is σ = 18898038443520. Its totient is φ = 12467455916080.

The previous prime is 15666342632333. The next prime is 15666342632371. The reversal of 15666342632345 is 54323624366651.

It is a happy number.

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

It is not a de Polignac number, because 15666342632345 - 2¹⁸ = 15666342370201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8202272675 + ... + 8202274584.

It is an arithmetic number, because the mean of its divisors is an integer number (2362254805440).

Almost surely, 2^{15666342632345} is an apocalyptic number.

It is an amenable number.

15666342632345 is a deficient number, since it is larger than the sum of its proper divisors (3231695811175).

15666342632345 is a wasteful number, since it uses less digits than its factorization.

15666342632345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16404547455.

The product of its digits is 55987200, while the sum is 56.

Adding to 15666342632345 its reverse (54323624366651), we get a palindrome (69989966998996).

The spelling of 15666342632345 in words is "fifteen trillion, six hundred sixty-six billion, three hundred forty-two million, six hundred thirty-two thousand, three hundred forty-five".