19917983741039 has 8 divisors (see below), whose sum is σ = 20199284593680. Its totient is φ = 19636911314496.

The previous prime is 19917983740973. The next prime is 19917983741063. The reversal of 19917983741039 is 93014738971991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19917983741039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19917980741039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56930897 + ... + 57279690.

It is an arithmetic number, because the mean of its divisors is an integer number (2524910574210).

Almost surely, 2^{19917983741039} is an apocalyptic number.

19917983741039 is a deficient number, since it is larger than the sum of its proper divisors (281300852641).

19917983741039 is a wasteful number, since it uses less digits than its factorization.

19917983741039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114213049.

The product of its (nonzero) digits is 92588832, while the sum is 71.

The spelling of 19917983741039 in words is "nineteen trillion, nine hundred seventeen billion, nine hundred eighty-three million, seven hundred forty-one thousand, thirty-nine".