20145207314773 has 2 divisors, whose sum is σ = 20145207314774. Its totient is φ = 20145207314772.

The previous prime is 20145207314761. The next prime is 20145207314783. The reversal of 20145207314773 is 37741370254102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18296689716369 + 1848517598404 = 4277463^2 + 1359602^2 .

It is a cyclic number.

It is not a de Polignac number, because 20145207314773 - 2⁵ = 20145207314741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20145207314783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072603657386 + 10072603657387.

It is an arithmetic number, because the mean of its divisors is an integer number (10072603657387).

Almost surely, 2^{20145207314773} is an apocalyptic number.

It is an amenable number.

20145207314773 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145207314773 is an equidigital number, since it uses as much as digits as its factorization.

20145207314773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 46.

Adding to 20145207314773 its reverse (37741370254102), we get a palindrome (57886577568875).

The spelling of 20145207314773 in words is "twenty trillion, one hundred forty-five billion, two hundred seven million, three hundred fourteen thousand, seven hundred seventy-three".