13551515145 has 144 divisors (see below), whose sum is σ = 28066072320. Its totient is φ = 5923217664.

The previous prime is 13551515137. The next prime is 13551515147. The reversal of 13551515145 is 54151515531.

13551515145 is a `hidden beast` number, since 1 + 3 + 551 + 51 + 51 + 4 + 5 = 666.

It is not a de Polignac number, because 13551515145 - 2³ = 13551515137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13551515147) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 30868836 + ... + 30869274.

It is an arithmetic number, because the mean of its divisors is an integer number (194903280).

Almost surely, 2^13551515145 is an apocalyptic number.

13551515145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13551515145 is an abundant number, since it is smaller than the sum of its proper divisors (14514557175).

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

13551515145 is a wasteful number, since it uses less digits than its factorization.

13551515145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 550 counting only the distinct ones).

The product of its digits is 37500, while the sum is 36.

The spelling of 13551515145 in words is "thirteen billion, five hundred fifty-one million, five hundred fifteen thousand, one hundred forty-five".