13623443540 has 72 divisors (see below), whose sum is σ = 33825850632. Its totient is φ = 4594302720.

The previous prime is 13623443531. The next prime is 13623443591. The reversal of 13623443540 is 4534432631.

It can be written as a sum of positive squares in 4 ways, for example, as 192487876 + 13430955664 = 13874^2 + 115892^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 13623443540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54167 + ... + 173726.

It is an arithmetic number, because the mean of its divisors is an integer number (469803481).

Almost surely, 2^13623443540 is an apocalyptic number.

13623443540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13623443540 is an abundant number, since it is smaller than the sum of its proper divisors (20202407092).

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

13623443540 is a wasteful number, since it uses less digits than its factorization.

13623443540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227977 (or 227968 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 13623443540 in words is "thirteen billion, six hundred twenty-three million, four hundred forty-three thousand, five hundred forty".