239180661697 has 2 divisors, whose sum is σ = 239180661698. Its totient is φ = 239180661696.

The previous prime is 239180661661. The next prime is 239180661763. The reversal of 239180661697 is 796166081932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233439720336 + 5740941361 = 483156^2 + 75769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239180661697 is a prime.

It is not a weakly prime, because it can be changed into another prime (239180661647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119590330848 + 119590330849.

It is an arithmetic number, because the mean of its divisors is an integer number (119590330849).

Almost surely, 2^239180661697 is an apocalyptic number.

It is an amenable number.

239180661697 is a deficient number, since it is larger than the sum of its proper divisors (1).

239180661697 is an equidigital number, since it uses as much as digits as its factorization.

239180661697 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 58.

The spelling of 239180661697 in words is "two hundred thirty-nine billion, one hundred eighty million, six hundred sixty-one thousand, six hundred ninety-seven".