19242039680639 has 4 divisors (see below), whose sum is σ = 19242132713256. Its totient is φ = 19241946648024.

The previous prime is 19242039680627. The next prime is 19242039680653. The reversal of 19242039680639 is 93608693024291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19242039680639 - 2¹² = 19242039676543 is a prime.

It is a super-2 number, since 2×19242039680639² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19242039682639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46205369 + ... + 46619954.

It is an arithmetic number, because the mean of its divisors is an integer number (4810533178314).

Almost surely, 2^{19242039680639} is an apocalyptic number.

19242039680639 is a deficient number, since it is larger than the sum of its proper divisors (93032617).

19242039680639 is an equidigital number, since it uses as much as digits as its factorization.

19242039680639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93032616.

The product of its (nonzero) digits is 30233088, while the sum is 62.

The spelling of 19242039680639 in words is "nineteen trillion, two hundred forty-two billion, thirty-nine million, six hundred eighty thousand, six hundred thirty-nine".