20144520007019 has 8 divisors (see below), whose sum is σ = 20340234556752. Its totient is φ = 19949685073920.

The previous prime is 20144520006979. The next prime is 20144520007021. The reversal of 20144520007019 is 91070002544102.

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-20144520007019 is a prime.

It is a super-2 number, since 2×20144520007019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20144520007019.

It is not an unprimeable number, because it can be changed into a prime (20144520067019) 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, 219858134 + ... + 219949739.

It is an arithmetic number, because the mean of its divisors is an integer number (2542529319594).

Almost surely, 2^{20144520007019} is an apocalyptic number.

20144520007019 is a deficient number, since it is larger than the sum of its proper divisors (195714549733).

20144520007019 is a wasteful number, since it uses less digits than its factorization.

20144520007019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439808317.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 20144520007019 in words is "twenty trillion, one hundred forty-four billion, five hundred twenty million, seven thousand, nineteen".