20465619127 has 2 divisors, whose sum is σ = 20465619128. Its totient is φ = 20465619126.

The previous prime is 20465619113. The next prime is 20465619151. The reversal of 20465619127 is 72191656402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20465619127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20465619107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10232809563 + 10232809564.

It is an arithmetic number, because the mean of its divisors is an integer number (10232809564).

Almost surely, 2^20465619127 is an apocalyptic number.

20465619127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20465619127 is an equidigital number, since it uses as much as digits as its factorization.

20465619127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 20465619127 in words is "twenty billion, four hundred sixty-five million, six hundred nineteen thousand, one hundred twenty-seven".