239636664401 has 2 divisors, whose sum is σ = 239636664402. Its totient is φ = 239636664400.

The previous prime is 239636664383. The next prime is 239636664419. The reversal of 239636664401 is 104466636932.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (239636664383) and next prime (239636664419).

It can be written as a sum of positive squares in only one way, i.e., 228269906176 + 11366758225 = 477776^2 + 106615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239636664401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239636664401.

It is not a weakly prime, because it can be changed into another prime (239636664461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119818332200 + 119818332201.

It is an arithmetic number, because the mean of its divisors is an integer number (119818332201).

Almost surely, 2^239636664401 is an apocalyptic number.

It is an amenable number.

239636664401 is a deficient number, since it is larger than the sum of its proper divisors (1).

239636664401 is an equidigital number, since it uses as much as digits as its factorization.

239636664401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 50.

The spelling of 239636664401 in words is "two hundred thirty-nine billion, six hundred thirty-six million, six hundred sixty-four thousand, four hundred one".