12900536509 has 8 divisors (see below), whose sum is σ = 15219066368. Its totient is φ = 10700905680.

The previous prime is 12900536501. The next prime is 12900536521. The reversal of 12900536509 is 90563500921.

It is a happy number.

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 12900536509 - 2³ = 12900536501 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 (12900536501) 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, 29724522 + ... + 29724955.

It is an arithmetic number, because the mean of its divisors is an integer number (1902383296).

Almost surely, 2^12900536509 is an apocalyptic number.

It is an amenable number.

12900536509 is a deficient number, since it is larger than the sum of its proper divisors (2318529859).

12900536509 is an equidigital number, since it uses as much as digits as its factorization.

12900536509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59449515.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 12900536509 in words is "twelve billion, nine hundred million, five hundred thirty-six thousand, five hundred nine".