245552540205239 has 2 divisors, whose sum is σ = 245552540205240. Its totient is φ = 245552540205238.

The previous prime is 245552540205121. The next prime is 245552540205263. The reversal of 245552540205239 is 932502045255542.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245552540205239 - 2³² = 245548245237943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245552540205289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122776270102619 + 122776270102620.

It is an arithmetic number, because the mean of its divisors is an integer number (122776270102620).

Almost surely, 2^{245552540205239} is an apocalyptic number.

245552540205239 is a deficient number, since it is larger than the sum of its proper divisors (1).

245552540205239 is an equidigital number, since it uses as much as digits as its factorization.

245552540205239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600000, while the sum is 53.

The spelling of 245552540205239 in words is "two hundred forty-five trillion, five hundred fifty-two billion, five hundred forty million, two hundred five thousand, two hundred thirty-nine".