12506441069 has 2 divisors, whose sum is σ = 12506441070. Its totient is φ = 12506441068.

The previous prime is 12506441029. The next prime is 12506441147. The reversal of 12506441069 is 96014460521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11429748100 + 1076692969 = 106910^2 + 32813^2 .

It is a cyclic number.

It is not a de Polignac number, because 12506441069 - 2¹² = 12506436973 is a prime.

It is a super-2 number, since 2×12506441069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12506441029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253220534 + 6253220535.

It is an arithmetic number, because the mean of its divisors is an integer number (6253220535).

Almost surely, 2^12506441069 is an apocalyptic number.

It is an amenable number.

12506441069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12506441069 is an equidigital number, since it uses as much as digits as its factorization.

12506441069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 12506441069 in words is "twelve billion, five hundred six million, four hundred forty-one thousand, sixty-nine".