13551032605 has 24 divisors (see below), whose sum is σ = 18925345656. Its totient is φ = 9275566080.

The previous prime is 13551032519. The next prime is 13551032609. The reversal of 13551032605 is 50623015531.

It can be written as a sum of positive squares in 4 ways, for example, as 586705284 + 12964327321 = 24222^2 + 113861^2 .

It is not a de Polignac number, because 13551032605 - 2¹¹ = 13551030557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13551032609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648492 + ... + 669061.

It is an arithmetic number, because the mean of its divisors is an integer number (788556069).

Almost surely, 2^13551032605 is an apocalyptic number.

It is an amenable number.

13551032605 is a deficient number, since it is larger than the sum of its proper divisors (5374313051).

13551032605 is a wasteful number, since it uses less digits than its factorization.

13551032605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317597 (or 1317586 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The spelling of 13551032605 in words is "thirteen billion, five hundred fifty-one million, thirty-two thousand, six hundred five".