12998745774 has 72 divisors (see below), whose sum is σ = 32866906800. Its totient is φ = 3711367800.

The previous prime is 12998745769. The next prime is 12998745791. The reversal of 12998745774 is 47754789921.

12998745774 is a `hidden beast` number, since 1 + 29 + 98 + 7 + 457 + 74 = 666.

12998745774 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8957749 + ... + 8959199.

Almost surely, 2^12998745774 is an apocalyptic number.

12998745774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12998745774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16433453400).

12998745774 is an abundant number, since it is smaller than the sum of its proper divisors (19868161026).

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

12998745774 is an frugal number, since it uses more digits than its factorization.

12998745774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 1463 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 12998745774 in words is "twelve billion, nine hundred ninety-eight million, seven hundred forty-five thousand, seven hundred seventy-four".