19134721667998 has 8 divisors (see below), whose sum is σ = 28805700129192. Its totient is φ = 9532821624936.

The previous prime is 19134721667989. The next prime is 19134721668061. The reversal of 19134721667998 is 89976612743191.

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

It is a super-2 number, since 2×19134721667998² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19134721667998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17269603840 + ... + 17269604947.

It is an arithmetic number, because the mean of its divisors is an integer number (3600712516149).

Almost surely, 2^{19134721667998} is an apocalyptic number.

19134721667998 is a deficient number, since it is larger than the sum of its proper divisors (9670978461194).

19134721667998 is a wasteful number, since it uses less digits than its factorization.

19134721667998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34539209066.

The product of its digits is 246903552, while the sum is 73.

The spelling of 19134721667998 in words is "nineteen trillion, one hundred thirty-four billion, seven hundred twenty-one million, six hundred sixty-seven thousand, nine hundred ninety-eight".