13207189540 has 24 divisors (see below), whose sum is σ = 27754566840. Its totient is φ = 5279167488.

The previous prime is 13207189529. The next prime is 13207189547. The reversal of 13207189540 is 4598170231.

It can be written as a sum of positive squares in 4 ways, for example, as 22638564 + 13184550976 = 4758^2 + 114824^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13207189493 and 13207189502.

It is not an unprimeable number, because it can be changed into a prime (13207189547) 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, 202477 + ... + 259636.

It is an arithmetic number, because the mean of its divisors is an integer number (1156440285).

Almost surely, 2^13207189540 is an apocalyptic number.

13207189540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13207189540 is an abundant number, since it is smaller than the sum of its proper divisors (14547377300).

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

13207189540 is a wasteful number, since it uses less digits than its factorization.

13207189540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463551 (or 463549 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 13207189540 in words is "thirteen billion, two hundred seven million, one hundred eighty-nine thousand, five hundred forty".