13261560220 has 48 divisors (see below), whose sum is σ = 29064692160. Its totient is φ = 5076356096.

The previous prime is 13261560199. The next prime is 13261560223. The reversal of 13261560220 is 2206516231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261560223) 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, 35632 + ... + 166711.

It is an arithmetic number, because the mean of its divisors is an integer number (605514420).

Almost surely, 2^13261560220 is an apocalyptic number.

13261560220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13261560220 is an abundant number, since it is smaller than the sum of its proper divisors (15803131940).

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

13261560220 is a wasteful number, since it uses less digits than its factorization.

13261560220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202494 (or 202492 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 13261560220 in words is "thirteen billion, two hundred sixty-one million, five hundred sixty thousand, two hundred twenty".