20124248983919 has 4 divisors (see below), whose sum is σ = 20668147605144. Its totient is φ = 19580350362696.

The previous prime is 20124248983871. The next prime is 20124248983939. The reversal of 20124248983919 is 91938984242102.

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 20124248983919 - 2³² = 20119954016623 is a prime.

It is a super-2 number, since 2×20124248983919² (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 (20124248983939) by changing a digit.

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, 271949310557 + ... + 271949310630.

It is an arithmetic number, because the mean of its divisors is an integer number (5167036901286).

Almost surely, 2^{20124248983919} is an apocalyptic number.

20124248983919 is a deficient number, since it is larger than the sum of its proper divisors (543898621225).

20124248983919 is an equidigital number, since it uses as much as digits as its factorization.

20124248983919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543898621224.

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 20124248983919 in words is "twenty trillion, one hundred twenty-four billion, two hundred forty-eight million, nine hundred eighty-three thousand, nine hundred nineteen".