12555699958 has 8 divisors (see below), whose sum is σ = 18839927952. Its totient is φ = 6275723976.

The previous prime is 12555699899. The next prime is 12555699971. The reversal of 12555699958 is 85999655521.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12555699958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055610 + ... + 1067437.

It is an arithmetic number, because the mean of its divisors is an integer number (2354990994).

Almost surely, 2^12555699958 is an apocalyptic number.

12555699958 is a deficient number, since it is larger than the sum of its proper divisors (6284227994).

12555699958 is a wasteful number, since it uses less digits than its factorization.

12555699958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126006.

The product of its digits is 43740000, while the sum is 64.

The spelling of 12555699958 in words is "twelve billion, five hundred fifty-five million, six hundred ninety-nine thousand, nine hundred fifty-eight".