20518384067419 has 8 divisors (see below), whose sum is σ = 23458752551648. Its totient is φ = 17580308273280.

The previous prime is 20518384067413. The next prime is 20518384067471. The reversal of 20518384067419 is 91476048381502.

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

It is a cyclic number.

It is not a de Polignac number, because 20518384067419 - 2³ = 20518384067411 is a prime.

It is a super-2 number, since 2×20518384067419² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20518384067411) 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, 573153342 + ... + 573189139.

It is an arithmetic number, because the mean of its divisors is an integer number (2932344068956).

It is a 1-persistent number, because it is pandigital, but 2⋅20518384067419 = 41036768134838 is not.

Almost surely, 2^{20518384067419} is an apocalyptic number.

20518384067419 is a deficient number, since it is larger than the sum of its proper divisors (2940368484229).

20518384067419 is a wasteful number, since it uses less digits than its factorization.

20518384067419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146345045.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 20518384067419 in words is "twenty trillion, five hundred eighteen billion, three hundred eighty-four million, sixty-seven thousand, four hundred nineteen".