15665277041 has 2 divisors, whose sum is σ = 15665277042. Its totient is φ = 15665277040.

The previous prime is 15665277031. The next prime is 15665277059. The reversal of 15665277041 is 14077256651.

15665277041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8179393600 + 7485883441 = 90440^2 + 86521^2 .

It is a cyclic number.

It is not a de Polignac number, because 15665277041 - 2¹⁰ = 15665276017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15665276983 and 15665277001.

It is not a weakly prime, because it can be changed into another prime (15665277031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7832638520 + 7832638521.

It is an arithmetic number, because the mean of its divisors is an integer number (7832638521).

Almost surely, 2^15665277041 is an apocalyptic number.

It is an amenable number.

15665277041 is a deficient number, since it is larger than the sum of its proper divisors (1).

15665277041 is an equidigital number, since it uses as much as digits as its factorization.

15665277041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 15665277041 in words is "fifteen billion, six hundred sixty-five million, two hundred seventy-seven thousand, forty-one".