239986721063 has 2 divisors, whose sum is σ = 239986721064. Its totient is φ = 239986721062.

The previous prime is 239986721059. The next prime is 239986721071. The reversal of 239986721063 is 360127689932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239986721063 - 2² = 239986721059 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239986721363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119993360531 + 119993360532.

It is an arithmetic number, because the mean of its divisors is an integer number (119993360532).

Almost surely, 2^239986721063 is an apocalyptic number.

239986721063 is a deficient number, since it is larger than the sum of its proper divisors (1).

239986721063 is an equidigital number, since it uses as much as digits as its factorization.

239986721063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 239986721063 in words is "two hundred thirty-nine billion, nine hundred eighty-six million, seven hundred twenty-one thousand, sixty-three".