13504111020 has 120 divisors (see below), whose sum is σ = 42430349808. Its totient is φ = 3595363200.

The previous prime is 13504110959. The next prime is 13504111031. The reversal of 13504111020 is 2011140531.

It is a super-2 number, since 2×13504111020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13504110984 and 13504111002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1064515 + ... + 1077125.

Almost surely, 2^13504111020 is an apocalyptic number.

13504111020 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 13504111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21215174904).

13504111020 is an abundant number, since it is smaller than the sum of its proper divisors (28926238788).

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

13504111020 is a wasteful number, since it uses less digits than its factorization.

13504111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13293 (or 13282 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 13504111020 its reverse (2011140531), we get a palindrome (15515251551).

The spelling of 13504111020 in words is "thirteen billion, five hundred four million, one hundred eleven thousand, twenty".