14238078661 has 2 divisors, whose sum is σ = 14238078662. Its totient is φ = 14238078660.

The previous prime is 14238078611. The next prime is 14238078671. The reversal of 14238078661 is 16687083241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13826232225 + 411846436 = 117585^2 + 20294^2 .

It is a cyclic number.

It is not a de Polignac number, because 14238078661 - 2¹¹ = 14238076613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14238078611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7119039330 + 7119039331.

It is an arithmetic number, because the mean of its divisors is an integer number (7119039331).

Almost surely, 2^14238078661 is an apocalyptic number.

It is an amenable number.

14238078661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14238078661 is an equidigital number, since it uses as much as digits as its factorization.

14238078661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 14238078661 in words is "fourteen billion, two hundred thirty-eight million, seventy-eight thousand, six hundred sixty-one".