13409212512 has 48 divisors (see below), whose sum is σ = 35205150960. Its totient is φ = 4468979712.

The previous prime is 13409212499. The next prime is 13409212517. The reversal of 13409212512 is 21521290431.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 13409212512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409212517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060564 + ... + 1073132.

It is an arithmetic number, because the mean of its divisors is an integer number (733440645).

Almost surely, 2^13409212512 is an apocalyptic number.

13409212512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13409212512 is an abundant number, since it is smaller than the sum of its proper divisors (21795938448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13409212512 is a wasteful number, since it uses less digits than its factorization.

13409212512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23695 (or 23687 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 13409212512 in words is "thirteen billion, four hundred nine million, two hundred twelve thousand, five hundred twelve".