13512012009 has 16 divisors (see below), whose sum is σ = 18805218432. Its totient is φ = 8613652608.

The previous prime is 13512011987. The next prime is 13512012023. The reversal of 13512012009 is 90021021531.

It is not a de Polignac number, because 13512012009 - 2¹⁶ = 13511946473 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13512012009.

It is not an unprimeable number, because it can be changed into a prime (13512012809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203709 + ... + 261765.

It is an arithmetic number, because the mean of its divisors is an integer number (1175326152).

Almost surely, 2^13512012009 is an apocalyptic number.

It is an amenable number.

13512012009 is a deficient number, since it is larger than the sum of its proper divisors (5293206423).

13512012009 is a wasteful number, since it uses less digits than its factorization.

13512012009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61456.

The product of its (nonzero) digits is 540, while the sum is 24.

The spelling of 13512012009 in words is "thirteen billion, five hundred twelve million, twelve thousand, nine".