245567623129 has 2 divisors, whose sum is σ = 245567623130. Its totient is φ = 245567623128.

The previous prime is 245567623127. The next prime is 245567623141. The reversal of 245567623129 is 921326765542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154722649104 + 90844974025 = 393348^2 + 301405^2 .

It is a cyclic number.

It is not a de Polignac number, because 245567623129 - 2¹ = 245567623127 is a prime.

Together with 245567623127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (245567623123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122783811564 + 122783811565.

It is an arithmetic number, because the mean of its divisors is an integer number (122783811565).

Almost surely, 2^245567623129 is an apocalyptic number.

It is an amenable number.

245567623129 is a deficient number, since it is larger than the sum of its proper divisors (1).

245567623129 is an equidigital number, since it uses as much as digits as its factorization.

245567623129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 52.

The spelling of 245567623129 in words is "two hundred forty-five billion, five hundred sixty-seven million, six hundred twenty-three thousand, one hundred twenty-nine".