15542312969 has 2 divisors, whose sum is σ = 15542312970. Its totient is φ = 15542312968.

The previous prime is 15542312963. The next prime is 15542312993. The reversal of 15542312969 is 96921324551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11297138944 + 4245174025 = 106288^2 + 65155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15542312969 is a prime.

It is a super-2 number, since 2×15542312969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15542312963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7771156484 + 7771156485.

It is an arithmetic number, because the mean of its divisors is an integer number (7771156485).

Almost surely, 2^15542312969 is an apocalyptic number.

It is an amenable number.

15542312969 is a deficient number, since it is larger than the sum of its proper divisors (1).

15542312969 is an equidigital number, since it uses as much as digits as its factorization.

15542312969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The spelling of 15542312969 in words is "fifteen billion, five hundred forty-two million, three hundred twelve thousand, nine hundred sixty-nine".