12852780005 has 8 divisors (see below), whose sum is σ = 16609746552. Its totient is φ = 9491283648.

The previous prime is 12852780001. The next prime is 12852780043. The reversal of 12852780005 is 50008725821.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 611127841 + 12241652164 = 24721^2 + 110642^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12852780005 - 2² = 12852780001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12852780001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98867474 + ... + 98867603.

It is an arithmetic number, because the mean of its divisors is an integer number (2076218319).

Almost surely, 2^12852780005 is an apocalyptic number.

It is an amenable number.

12852780005 is a deficient number, since it is larger than the sum of its proper divisors (3756966547).

12852780005 is a wasteful number, since it uses less digits than its factorization.

12852780005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197735095.

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 12852780005 in words is "twelve billion, eight hundred fifty-two million, seven hundred eighty thousand, five".