15442732478441 has 2 divisors, whose sum is σ = 15442732478442. Its totient is φ = 15442732478440.

The previous prime is 15442732478317. The next prime is 15442732478443. The reversal of 15442732478441 is 14487423724451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8123759748841 + 7318972729600 = 2850221^2 + 2705360^2 .

It is an emirp because it is prime and its reverse (14487423724451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15442732478441 - 2³⁸ = 15167854571497 is a prime.

Together with 15442732478443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15442732478443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7721366239220 + 7721366239221.

It is an arithmetic number, because the mean of its divisors is an integer number (7721366239221).

Almost surely, 2^{15442732478441} is an apocalyptic number.

It is an amenable number.

15442732478441 is a deficient number, since it is larger than the sum of its proper divisors (1).

15442732478441 is an equidigital number, since it uses as much as digits as its factorization.

15442732478441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24084480, while the sum is 56.

The spelling of 15442732478441 in words is "fifteen trillion, four hundred forty-two billion, seven hundred thirty-two million, four hundred seventy-eight thousand, four hundred forty-one".