12915567829 has 2 divisors, whose sum is σ = 12915567830. Its totient is φ = 12915567828.

The previous prime is 12915567673. The next prime is 12915567839. The reversal of 12915567829 is 92876551921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6545133604 + 6370434225 = 80902^2 + 79815^2 .

It is a cyclic number.

It is not a de Polignac number, because 12915567829 - 2¹¹ = 12915565781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12915567829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12915567839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457783914 + 6457783915.

It is an arithmetic number, because the mean of its divisors is an integer number (6457783915).

Almost surely, 2^12915567829 is an apocalyptic number.

It is an amenable number.

12915567829 is a deficient number, since it is larger than the sum of its proper divisors (1).

12915567829 is an equidigital number, since it uses as much as digits as its factorization.

12915567829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 55.

The spelling of 12915567829 in words is "twelve billion, nine hundred fifteen million, five hundred sixty-seven thousand, eight hundred twenty-nine".