245140856339 has 2 divisors, whose sum is σ = 245140856340. Its totient is φ = 245140856338.

The previous prime is 245140856293. The next prime is 245140856413. The reversal of 245140856339 is 933658041542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245140856339 - 2¹⁶ = 245140790803 is a prime.

It is not a weakly prime, because it can be changed into another prime (245140826339) 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, 122570428169 + 122570428170.

It is an arithmetic number, because the mean of its divisors is an integer number (122570428170).

Almost surely, 2^245140856339 is an apocalyptic number.

245140856339 is a deficient number, since it is larger than the sum of its proper divisors (1).

245140856339 is an equidigital number, since it uses as much as digits as its factorization.

245140856339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 245140856339 in words is "two hundred forty-five billion, one hundred forty million, eight hundred fifty-six thousand, three hundred thirty-nine".