13261441550 has 24 divisors (see below), whose sum is σ = 28190036496. Its totient is φ = 4546779840.

The previous prime is 13261441537. The next prime is 13261441561. The reversal of 13261441550 is 5514416231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18944567 + ... + 18945266.

It is an arithmetic number, because the mean of its divisors is an integer number (1174584854).

Almost surely, 2^13261441550 is an apocalyptic number.

13261441550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13261441550 is an abundant number, since it is smaller than the sum of its proper divisors (14928594946).

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

13261441550 is a wasteful number, since it uses less digits than its factorization.

13261441550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37889852 (or 37889847 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 13261441550 its reverse (5514416231), we get a palindrome (18775857781).

The spelling of 13261441550 in words is "thirteen billion, two hundred sixty-one million, four hundred forty-one thousand, five hundred fifty".