13403121512 has 32 divisors (see below), whose sum is σ = 28858399200. Its totient is φ = 5771678400.

The previous prime is 13403121469. The next prime is 13403121527. The reversal of 13403121512 is 21512130431.

It is a super-2 number, since 2×13403121512² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4006439 + ... + 4009782.

It is an arithmetic number, because the mean of its divisors is an integer number (901824975).

Almost surely, 2^13403121512 is an apocalyptic number.

It is an amenable number.

13403121512 is an abundant number, since it is smaller than the sum of its proper divisors (15455277688).

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

13403121512 is a wasteful number, since it uses less digits than its factorization.

13403121512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8016257 (or 8016253 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13403121512 its reverse (21512130431), we get a palindrome (34915251943).

The spelling of 13403121512 in words is "thirteen billion, four hundred three million, one hundred twenty-one thousand, five hundred twelve".