12558098939742 has 128 divisors (see below), whose sum is σ = 29224303632000. Its totient is φ = 3994327434240.

The previous prime is 12558098939723. The next prime is 12558098939809. The reversal of 12558098939742 is 24793989085521.

12558098939742 is a `hidden beast` number, since 1 + 2 + 5 + 580 + 9 + 8 + 9 + 39 + 7 + 4 + 2 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15133684 + ... + 15941912.

It is an arithmetic number, because the mean of its divisors is an integer number (228314872125).

Almost surely, 2^{12558098939742} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12558098939742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14612151816000).

12558098939742 is an abundant number, since it is smaller than the sum of its proper divisors (16666204692258).

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

12558098939742 is a wasteful number, since it uses less digits than its factorization.

12558098939742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808443 (or 808437 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 72.

The spelling of 12558098939742 in words is "twelve trillion, five hundred fifty-eight billion, ninety-eight million, nine hundred thirty-nine thousand, seven hundred forty-two".