13550303240 has 16 divisors (see below), whose sum is σ = 30488182380. Its totient is φ = 5420121280.

The previous prime is 13550303219. The next prime is 13550303243. The reversal of 13550303240 is 4230305531.

It can be written as a sum of positive squares in 2 ways, for example, as 13496398276 + 53904964 = 116174^2 + 7342^2 .

It is a super-2 number, since 2×13550303240² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13550303243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169378751 + ... + 169378830.

Almost surely, 2^13550303240 is an apocalyptic number.

13550303240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13550303240 is an abundant number, since it is smaller than the sum of its proper divisors (16937879140).

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

13550303240 is a wasteful number, since it uses less digits than its factorization.

13550303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338757592 (or 338757588 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 13550303240 its reverse (4230305531), we get a palindrome (17780608771).

The spelling of 13550303240 in words is "thirteen billion, five hundred fifty million, three hundred three thousand, two hundred forty".