13445015520 has 96 divisors (see below), whose sum is σ = 43252973568. Its totient is φ = 3509047808.

The previous prime is 13445015513. The next prime is 13445015629. The reversal of 13445015520 is 2551054431.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275424 + ... + 320543.

It is an arithmetic number, because the mean of its divisors is an integer number (450551808).

Almost surely, 2^13445015520 is an apocalyptic number.

13445015520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13445015520 is an abundant number, since it is smaller than the sum of its proper divisors (29807958048).

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

13445015520 is a wasteful number, since it uses less digits than its factorization.

13445015520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596032 (or 596024 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 13445015520 its reverse (2551054431), we get a palindrome (15996069951).

The spelling of 13445015520 in words is "thirteen billion, four hundred forty-five million, fifteen thousand, five hundred twenty".