13205555916 has 48 divisors (see below), whose sum is σ = 35269726464. Its totient is φ = 3767132736.

The previous prime is 13205555873. The next prime is 13205555917. The reversal of 13205555916 is 61955550231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (13205555917) 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, 68235 + ... + 176258.

It is an arithmetic number, because the mean of its divisors is an integer number (734785968).

Almost surely, 2^13205555916 is an apocalyptic number.

It is an amenable number.

13205555916 is an abundant number, since it is smaller than the sum of its proper divisors (22064170548).

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

13205555916 is a wasteful number, since it uses less digits than its factorization.

13205555916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245150 (or 245148 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 42.

The spelling of 13205555916 in words is "thirteen billion, two hundred five million, five hundred fifty-five thousand, nine hundred sixteen".