15582742771 has 2 divisors, whose sum is σ = 15582742772. Its totient is φ = 15582742770.

The previous prime is 15582742723. The next prime is 15582742849. The reversal of 15582742771 is 17724728551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15582742771 - 2²³ = 15574354163 is a prime.

It is not a weakly prime, because it can be changed into another prime (15582742711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7791371385 + 7791371386.

It is an arithmetic number, because the mean of its divisors is an integer number (7791371386).

Almost surely, 2^15582742771 is an apocalyptic number.

15582742771 is a deficient number, since it is larger than the sum of its proper divisors (1).

15582742771 is an equidigital number, since it uses as much as digits as its factorization.

15582742771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097600, while the sum is 49.

The spelling of 15582742771 in words is "fifteen billion, five hundred eighty-two million, seven hundred forty-two thousand, seven hundred seventy-one".