12108540861563 has 8 divisors (see below), whose sum is σ = 12178031857920. Its totient is φ = 12039113360320.

The previous prime is 12108540861539. The next prime is 12108540861589. The reversal of 12108540861563 is 36516804580121.

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 12108540861563 - 2⁴² = 7710494350459 is a prime.

It is a super-2 number, since 2×12108540861563² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12108540861503) 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, 15491258 + ... + 16254111.

It is an arithmetic number, because the mean of its divisors is an integer number (1522253982240).

Almost surely, 2^{12108540861563} is an apocalyptic number.

12108540861563 is a deficient number, since it is larger than the sum of its proper divisors (69490996357).

12108540861563 is a wasteful number, since it uses less digits than its factorization.

12108540861563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31747557.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The spelling of 12108540861563 in words is "twelve trillion, one hundred eight billion, five hundred forty million, eight hundred sixty-one thousand, five hundred sixty-three".