13255655550 has 144 divisors (see below), whose sum is σ = 34770118320. Its totient is φ = 3341381120.

The previous prime is 13255655533. The next prime is 13255655587. The reversal of 13255655550 is 5555655231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7061212 + ... + 7063088.

It is an arithmetic number, because the mean of its divisors is an integer number (241459155).

Almost surely, 2^13255655550 is an apocalyptic number.

13255655550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13255655550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17385059160).

13255655550 is an abundant number, since it is smaller than the sum of its proper divisors (21514462770).

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

13255655550 is a wasteful number, since it uses less digits than its factorization.

13255655550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027 (or 1999 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 13255655550 in words is "thirteen billion, two hundred fifty-five million, six hundred fifty-five thousand, five hundred fifty".