13521066240 has 144 divisors (see below), whose sum is σ = 47108771136. Its totient is φ = 3277824000.

The previous prime is 13521066233. The next prime is 13521066289. The reversal of 13521066240 is 4266012531.

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

It is a junction number, because it is equal to n+sod(n) for n = 13521066198 and 13521066207.

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, 117811 + ... + 202290.

It is an arithmetic number, because the mean of its divisors is an integer number (327144244).

Almost surely, 2^13521066240 is an apocalyptic number.

13521066240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13521066240 is an abundant number, since it is smaller than the sum of its proper divisors (33587704896).

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

13521066240 is a wasteful number, since it uses less digits than its factorization.

13521066240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320136 (or 320122 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 13521066240 its reverse (4266012531), we get a palindrome (17787078771).

The spelling of 13521066240 in words is "thirteen billion, five hundred twenty-one million, sixty-six thousand, two hundred forty".