20145774263 has 2 divisors, whose sum is σ = 20145774264. Its totient is φ = 20145774262.

The previous prime is 20145774217. The next prime is 20145774281. The reversal of 20145774263 is 36247754102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20145774263 - 2²² = 20141579959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20145774263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20145774203) 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, 10072887131 + 10072887132.

It is an arithmetic number, because the mean of its divisors is an integer number (10072887132).

Almost surely, 2^20145774263 is an apocalyptic number.

20145774263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145774263 is an equidigital number, since it uses as much as digits as its factorization.

20145774263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 20145774263 in words is "twenty billion, one hundred forty-five million, seven hundred seventy-four thousand, two hundred sixty-three".