12539198192020 has 24 divisors (see below), whose sum is σ = 27718227583200. Its totient is φ = 4751696156832.

The previous prime is 12539198191981. The next prime is 12539198192057. The reversal of 12539198192020 is 2029189193521.

It is a happy number.

It is a congruent number.

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, 16498944610 + ... + 16498945369.

It is an arithmetic number, because the mean of its divisors is an integer number (1154926149300).

Almost surely, 2^{12539198192020} is an apocalyptic number.

12539198192020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12539198192020 is an abundant number, since it is smaller than the sum of its proper divisors (15179029391180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12539198192020 is a wasteful number, since it uses less digits than its factorization.

12539198192020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32997890007 (or 32997890005 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 12539198192020 in words is "twelve trillion, five hundred thirty-nine billion, one hundred ninety-eight million, one hundred ninety-two thousand, twenty".