20445364351 has 2 divisors, whose sum is σ = 20445364352. Its totient is φ = 20445364350.

The previous prime is 20445364321. The next prime is 20445364397. The reversal of 20445364351 is 15346354402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20445364351 - 2¹¹ = 20445362303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20445364351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20445364321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222682175 + 10222682176.

It is an arithmetic number, because the mean of its divisors is an integer number (10222682176).

Almost surely, 2^20445364351 is an apocalyptic number.

20445364351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20445364351 is an equidigital number, since it uses as much as digits as its factorization.

20445364351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 20445364351 in words is "twenty billion, four hundred forty-five million, three hundred sixty-four thousand, three hundred fifty-one".