12800527129 has 4 divisors (see below), whose sum is σ = 13785183076. Its totient is φ = 11815871184.

The previous prime is 12800527063. The next prime is 12800527147. The reversal of 12800527129 is 92172500821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6375703104 + 6424824025 = 79848^2 + 80155^2 .

It is not a de Polignac number, because 12800527129 - 2²⁵ = 12766972697 is a prime.

It is a super-3 number, since 3×12800527129³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12800527199) 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, 492327954 + ... + 492327979.

It is an arithmetic number, because the mean of its divisors is an integer number (3446295769).

Almost surely, 2^12800527129 is an apocalyptic number.

It is an amenable number.

12800527129 is a deficient number, since it is larger than the sum of its proper divisors (984655947).

12800527129 is an equidigital number, since it uses as much as digits as its factorization.

12800527129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984655946.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 12800527129 in words is "twelve billion, eight hundred million, five hundred twenty-seven thousand, one hundred twenty-nine".