245864822729 has 2 divisors, whose sum is σ = 245864822730. Its totient is φ = 245864822728.

The previous prime is 245864822719. The next prime is 245864822737. The reversal of 245864822729 is 927228468542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160000000000 + 85864822729 = 400000^2 + 293027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245864822729 is a prime.

It is a super-2 number, since 2×245864822729² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245864822719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122932411364 + 122932411365.

It is an arithmetic number, because the mean of its divisors is an integer number (122932411365).

Almost surely, 2^245864822729 is an apocalyptic number.

It is an amenable number.

245864822729 is a deficient number, since it is larger than the sum of its proper divisors (1).

245864822729 is an equidigital number, since it uses as much as digits as its factorization.

245864822729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30965760, while the sum is 59.

The spelling of 245864822729 in words is "two hundred forty-five billion, eight hundred sixty-four million, eight hundred twenty-two thousand, seven hundred twenty-nine".