12067421017698 has 128 divisors (see below), whose sum is σ = 28072367769600. Its totient is φ = 3839200739136.

The previous prime is 12067421017681. The next prime is 12067421017781. The reversal of 12067421017698 is 89671012476021.

12067421017698 is a `hidden beast` number, since 1 + 2 + 0 + 67 + 421 + 0 + 1 + 76 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon 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, 22614940 + ... + 23142392.

It is an arithmetic number, because the mean of its divisors is an integer number (219315373200).

Almost surely, 2^{12067421017698} is an apocalyptic number.

12067421017698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12067421017698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14036183884800).

12067421017698 is an abundant number, since it is smaller than the sum of its proper divisors (16004946751902).

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

12067421017698 is a wasteful number, since it uses less digits than its factorization.

12067421017698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527733 (or 527727 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 12067421017698 in words is "twelve trillion, sixty-seven billion, four hundred twenty-one million, seventeen thousand, six hundred ninety-eight".