20143244807 has 8 divisors (see below), whose sum is σ = 23162084736. Its totient is φ = 17159713272.

The previous prime is 20143244743. The next prime is 20143244827. The reversal of 20143244807 is 70844234102.

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 20143244807 - 2⁶ = 20143244743 is a prime.

It is a super-2 number, since 2×20143244807² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143244827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8825873 + ... + 8828154.

It is an arithmetic number, because the mean of its divisors is an integer number (2895260592).

Almost surely, 2^20143244807 is an apocalyptic number.

20143244807 is a deficient number, since it is larger than the sum of its proper divisors (3018839929).

20143244807 is a wasteful number, since it uses less digits than its factorization.

20143244807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17654197.

The product of its (nonzero) digits is 43008, while the sum is 35.

Adding to 20143244807 its reverse (70844234102), we get a palindrome (90987478909).

The spelling of 20143244807 in words is "twenty billion, one hundred forty-three million, two hundred forty-four thousand, eight hundred seven".