12511469897 has 4 divisors (see below), whose sum is σ = 12609985536. Its totient is φ = 12412954260.

The previous prime is 12511469879. The next prime is 12511469909. The reversal of 12511469897 is 79896411521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12511469897 - 2¹⁰ = 12511468873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12511462897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49257629 + ... + 49257882.

It is an arithmetic number, because the mean of its divisors is an integer number (3152496384).

Almost surely, 2^12511469897 is an apocalyptic number.

It is an amenable number.

12511469897 is a deficient number, since it is larger than the sum of its proper divisors (98515639).

12511469897 is an equidigital number, since it uses as much as digits as its factorization.

12511469897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98515638.

The product of its digits is 1088640, while the sum is 53.

The spelling of 12511469897 in words is "twelve billion, five hundred eleven million, four hundred sixty-nine thousand, eight hundred ninety-seven".