13143215620 has 24 divisors (see below), whose sum is σ = 27910877400. Its totient is φ = 5198214912.

The previous prime is 13143215609. The next prime is 13143215621. The reversal of 13143215620 is 2651234131.

It can be written as a sum of positive squares in 4 ways, for example, as 81468676 + 13061746944 = 9026^2 + 114288^2 .

It is not an unprimeable number, because it can be changed into a prime (13143215621) 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, 3690135 + ... + 3693694.

It is an arithmetic number, because the mean of its divisors is an integer number (1162953225).

Almost surely, 2^13143215620 is an apocalyptic number.

13143215620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13143215620 is an abundant number, since it is smaller than the sum of its proper divisors (14767661780).

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

13143215620 is a wasteful number, since it uses less digits than its factorization.

13143215620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7383927 (or 7383925 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 13143215620 its reverse (2651234131), we get a palindrome (15794449751).

The spelling of 13143215620 in words is "thirteen billion, one hundred forty-three million, two hundred fifteen thousand, six hundred twenty".