13530152020 has 96 divisors (see below), whose sum is σ = 35822787840. Its totient is φ = 4169763840.

The previous prime is 13530151963. The next prime is 13530152029. The reversal of 13530152020 is 2025103531.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13530151982 and 13530152000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530152029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87702 + ... + 186418.

It is an arithmetic number, because the mean of its divisors is an integer number (373154040).

Almost surely, 2^13530152020 is an apocalyptic number.

13530152020 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 13530152020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17911393920).

13530152020 is an abundant number, since it is smaller than the sum of its proper divisors (22292635820).

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

13530152020 is a wasteful number, since it uses less digits than its factorization.

13530152020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98833 (or 98831 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 13530152020 its reverse (2025103531), we get a palindrome (15555255551).

The spelling of 13530152020 in words is "thirteen billion, five hundred thirty million, one hundred fifty-two thousand, twenty".