13114321520 has 80 divisors (see below), whose sum is σ = 31068100800. Its totient is φ = 5147154432.

The previous prime is 13114321513. The next prime is 13114321567. The reversal of 13114321520 is 2512341131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13114321520² (a number of 21 digits) contains 22 as substring.

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, 1144781 + ... + 1156179.

It is an arithmetic number, because the mean of its divisors is an integer number (388351260).

Almost surely, 2^13114321520 is an apocalyptic number.

13114321520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13114321520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15534050400).

13114321520 is an abundant number, since it is smaller than the sum of its proper divisors (17953779280).

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

13114321520 is a wasteful number, since it uses less digits than its factorization.

13114321520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11682 (or 11676 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13114321520 its reverse (2512341131), we get a palindrome (15626662651).

The spelling of 13114321520 in words is "thirteen billion, one hundred fourteen million, three hundred twenty-one thousand, five hundred twenty".