13145213220 has 48 divisors (see below), whose sum is σ = 37150602048. Its totient is φ = 3472627840.

The previous prime is 13145213203. The next prime is 13145213227. The reversal of 13145213220 is 2231254131.

It is not an unprimeable number, because it can be changed into a prime (13145213227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017351 + ... + 1030190.

It is an arithmetic number, because the mean of its divisors is an integer number (773970876).

Almost surely, 2^13145213220 is an apocalyptic number.

13145213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13145213220 is an abundant number, since it is smaller than the sum of its proper divisors (24005388828).

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

13145213220 is a wasteful number, since it uses less digits than its factorization.

13145213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047660 (or 2047658 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13145213220 its reverse (2231254131), we get a palindrome (15376467351).

The spelling of 13145213220 in words is "thirteen billion, one hundred forty-five million, two hundred thirteen thousand, two hundred twenty".