245440443529 has 2 divisors, whose sum is σ = 245440443530. Its totient is φ = 245440443528.

The previous prime is 245440443511. The next prime is 245440443581. The reversal of 245440443529 is 925344044542.

245440443529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208276315129 + 37164128400 = 456373^2 + 192780^2 .

It is a cyclic number.

It is not a de Polignac number, because 245440443529 - 2¹⁷ = 245440312457 is a prime.

It is a super-2 number, since 2×245440443529² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245440443509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122720221764 + 122720221765.

It is an arithmetic number, because the mean of its divisors is an integer number (122720221765).

Almost surely, 2^245440443529 is an apocalyptic number.

It is an amenable number.

245440443529 is a deficient number, since it is larger than the sum of its proper divisors (1).

245440443529 is an equidigital number, since it uses as much as digits as its factorization.

245440443529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 245440443529 in words is "two hundred forty-five billion, four hundred forty million, four hundred forty-three thousand, five hundred twenty-nine".