13520032154320 has 40 divisors (see below), whose sum is σ = 31480098421536. Its totient is φ = 5400094812288.

The previous prime is 13520032154311. The next prime is 13520032154327. The reversal of 13520032154320 is 2345123002531.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520032154327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123664542 + ... + 123773821.

Almost surely, 2^{13520032154320} is an apocalyptic number.

13520032154320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13520032154320 is an abundant number, since it is smaller than the sum of its proper divisors (17960066267216).

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

13520032154320 is a wasteful number, since it uses less digits than its factorization.

13520032154320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247439059 (or 247439053 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 13520032154320 its reverse (2345123002531), we get a palindrome (15865155156851).

The spelling of 13520032154320 in words is "thirteen trillion, five hundred twenty billion, thirty-two million, one hundred fifty-four thousand, three hundred twenty".