13280531550 has 96 divisors (see below), whose sum is σ = 38693773440. Its totient is φ = 2971862400.

The previous prime is 13280531549. The next prime is 13280531557. The reversal of 13280531550 is 5513508231.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13280531557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288120 + ... + 331019.

It is an arithmetic number, because the mean of its divisors is an integer number (403060140).

Almost surely, 2^13280531550 is an apocalyptic number.

13280531550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13280531550 is an abundant number, since it is smaller than the sum of its proper divisors (25413241890).

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

13280531550 is a wasteful number, since it uses less digits than its factorization.

13280531550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619178 (or 619173 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 13280531550 in words is "thirteen billion, two hundred eighty million, five hundred thirty-one thousand, five hundred fifty".