13209897140 has 48 divisors (see below), whose sum is σ = 30280509504. Its totient is φ = 4800768000.

The previous prime is 13209897059. The next prime is 13209897143. The reversal of 13209897140 is 4179890231.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 13209897091 and 13209897100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13209897143) 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, 376340 + ... + 409940.

It is an arithmetic number, because the mean of its divisors is an integer number (630843948).

Almost surely, 2^13209897140 is an apocalyptic number.

13209897140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13209897140 is an abundant number, since it is smaller than the sum of its proper divisors (17070612364).

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

13209897140 is a wasteful number, since it uses less digits than its factorization.

13209897140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35408 (or 35406 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 13209897140 in words is "thirteen billion, two hundred nine million, eight hundred ninety-seven thousand, one hundred forty".