20489875183 has 2 divisors, whose sum is σ = 20489875184. Its totient is φ = 20489875182.

The previous prime is 20489875127. The next prime is 20489875249. The reversal of 20489875183 is 38157898402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20489875183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20489878183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10244937591 + 10244937592.

It is an arithmetic number, because the mean of its divisors is an integer number (10244937592).

Almost surely, 2^20489875183 is an apocalyptic number.

20489875183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20489875183 is an equidigital number, since it uses as much as digits as its factorization.

20489875183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 20489875183 in words is "twenty billion, four hundred eighty-nine million, eight hundred seventy-five thousand, one hundred eighty-three".