20489875127 has 2 divisors, whose sum is σ = 20489875128. Its totient is φ = 20489875126.

The previous prime is 20489875111. The next prime is 20489875183. The reversal of 20489875127 is 72157898402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20489875127 - 2⁴ = 20489875111 is a prime.

It is a super-2 number, since 2×20489875127² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20489875027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10244937563 + 10244937564.

It is an arithmetic number, because the mean of its divisors is an integer number (10244937564).

Almost surely, 2^20489875127 is an apocalyptic number.

20489875127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20489875127 is an equidigital number, since it uses as much as digits as its factorization.

20489875127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 20489875127 in words is "twenty billion, four hundred eighty-nine million, eight hundred seventy-five thousand, one hundred twenty-seven".