20244406187 has 2 divisors, whose sum is σ = 20244406188. Its totient is φ = 20244406186.

The previous prime is 20244406153. The next prime is 20244406201. The reversal of 20244406187 is 78160444202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20244406187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20244406187.

It is not a weakly prime, because it can be changed into another prime (20249406187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122203093 + 10122203094.

It is an arithmetic number, because the mean of its divisors is an integer number (10122203094).

Almost surely, 2^20244406187 is an apocalyptic number.

20244406187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244406187 is an equidigital number, since it uses as much as digits as its factorization.

20244406187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 20244406187 in words is "twenty billion, two hundred forty-four million, four hundred six thousand, one hundred eighty-seven".