245788022861 has 2 divisors, whose sum is σ = 245788022862. Its totient is φ = 245788022860.

The previous prime is 245788022849. The next prime is 245788022897. The reversal of 245788022861 is 168220887542.

It is a happy number.

245788022861 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., 127731186025 + 118056836836 = 357395^2 + 343594^2 .

It is a cyclic number.

It is not a de Polignac number, because 245788022861 - 2⁶ = 245788022797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245788022761) 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, 122894011430 + 122894011431.

It is an arithmetic number, because the mean of its divisors is an integer number (122894011431).

Almost surely, 2^245788022861 is an apocalyptic number.

It is an amenable number.

245788022861 is a deficient number, since it is larger than the sum of its proper divisors (1).

245788022861 is an equidigital number, since it uses as much as digits as its factorization.

245788022861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 245788022861 in words is "two hundred forty-five billion, seven hundred eighty-eight million, twenty-two thousand, eight hundred sixty-one".