245590947839 has 2 divisors, whose sum is σ = 245590947840. Its totient is φ = 245590947838.

The previous prime is 245590947803. The next prime is 245590947841. The reversal of 245590947839 is 938749095542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245590947839 is a prime.

Together with 245590947841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245590947869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122795473919 + 122795473920.

It is an arithmetic number, because the mean of its divisors is an integer number (122795473920).

Almost surely, 2^245590947839 is an apocalyptic number.

245590947839 is a deficient number, since it is larger than the sum of its proper divisors (1).

245590947839 is an equidigital number, since it uses as much as digits as its factorization.

245590947839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97977600, while the sum is 65.

The spelling of 245590947839 in words is "two hundred forty-five billion, five hundred ninety million, nine hundred forty-seven thousand, eight hundred thirty-nine".