13209448572 has 30 divisors (see below), whose sum is σ = 34532108688. Its totient is φ = 4403149416.

The previous prime is 13209448561. The next prime is 13209448643. The reversal of 13209448572 is 27584490231.

13209448572 is a `hidden beast` number, since 1 + 32 + 0 + 9 + 4 + 48 + 572 = 666.

It is a super-3 number, since 3×13209448572³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20384628 + ... + 20385275.

Almost surely, 2^13209448572 is an apocalyptic number.

13209448572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13209448572 is an abundant number, since it is smaller than the sum of its proper divisors (21322660116).

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

13209448572 is a wasteful number, since it uses less digits than its factorization.

13209448572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40769919 (or 40769908 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 13209448572 in words is "thirteen billion, two hundred nine million, four hundred forty-eight thousand, five hundred seventy-two".