13551526540 has 96 divisors (see below), whose sum is σ = 31416517440. Its totient is φ = 4888805376.

The previous prime is 13551526529. The next prime is 13551526601. The reversal of 13551526540 is 4562515531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13551526540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766116 + ... + 783604.

It is an arithmetic number, because the mean of its divisors is an integer number (327255390).

Almost surely, 2^13551526540 is an apocalyptic number.

13551526540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13551526540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15708258720).

13551526540 is an abundant number, since it is smaller than the sum of its proper divisors (17864990900).

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

13551526540 is a wasteful number, since it uses less digits than its factorization.

13551526540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17611 (or 17609 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 13551526540 in words is "thirteen billion, five hundred fifty-one million, five hundred twenty-six thousand, five hundred forty".