13243951520 has 48 divisors (see below), whose sum is σ = 32935623840. Its totient is φ = 5018759424.

The previous prime is 13243951519. The next prime is 13243951531. The reversal of 13243951520 is 2515934231.

It is a super-2 number, since 2×13243951520² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175242 + ... + 2181321.

It is an arithmetic number, because the mean of its divisors is an integer number (686158830).

Almost surely, 2^13243951520 is an apocalyptic number.

13243951520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13243951520 is an abundant number, since it is smaller than the sum of its proper divisors (19691672320).

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

13243951520 is a wasteful number, since it uses less digits than its factorization.

13243951520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356597 (or 4356589 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 13243951520 in words is "thirteen billion, two hundred forty-three million, nine hundred fifty-one thousand, five hundred twenty".