2245431543557 has 2 divisors, whose sum is σ = 2245431543558. Its totient is φ = 2245431543556.

The previous prime is 2245431543527. The next prime is 2245431543577. The reversal of 2245431543557 is 7553451345422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252789956961 + 992641586596 = 1119281^2 + 996314^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245431543557 - 2¹⁶ = 2245431478021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245431543517) 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, 1122715771778 + 1122715771779.

It is an arithmetic number, because the mean of its divisors is an integer number (1122715771779).

Almost surely, 2^{2245431543557} is an apocalyptic number.

It is an amenable number.

2245431543557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245431543557 is an equidigital number, since it uses as much as digits as its factorization.

2245431543557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080000, while the sum is 50.

Adding to 2245431543557 its reverse (7553451345422), we get a palindrome (9798882888979).

The spelling of 2245431543557 in words is "two trillion, two hundred forty-five billion, four hundred thirty-one million, five hundred forty-three thousand, five hundred fifty-seven".