13512308649 has 24 divisors (see below), whose sum is σ = 21041421408. Its totient is φ = 7690536000.

The previous prime is 13512308627. The next prime is 13512308651. The reversal of 13512308649 is 94680321531.

It is not a de Polignac number, because 13512308649 - 2⁷ = 13512308521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13512308649.

It is not an unprimeable number, because it can be changed into a prime (13512308609) 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 23 ways as a sum of consecutive naturals, for example, 146212 + ... + 220005.

It is an arithmetic number, because the mean of its divisors is an integer number (876725892).

Almost surely, 2^13512308649 is an apocalyptic number.

It is an amenable number.

13512308649 is a deficient number, since it is larger than the sum of its proper divisors (7529112759).

13512308649 is a wasteful number, since it uses less digits than its factorization.

13512308649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366485 (or 366478 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 13512308649 in words is "thirteen billion, five hundred twelve million, three hundred eight thousand, six hundred forty-nine".