13109975280 has 80 divisors (see below), whose sum is σ = 45156588960. Its totient is φ = 3495992832.

The previous prime is 13109975209. The next prime is 13109975293. The reversal of 13109975280 is 8257990131.

13109975280 is a `hidden beast` number, since 1 + 31 + 0 + 9 + 97 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13109975280² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032557 + ... + 3036876.

It is an arithmetic number, because the mean of its divisors is an integer number (564457362).

Almost surely, 2^13109975280 is an apocalyptic number.

13109975280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13109975280 is an abundant number, since it is smaller than the sum of its proper divisors (32046613680).

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

13109975280 is a wasteful number, since it uses less digits than its factorization.

13109975280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069455 (or 6069443 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 13109975280 in words is "thirteen billion, one hundred nine million, nine hundred seventy-five thousand, two hundred eighty".