15545353545 has 20 divisors (see below), whose sum is σ = 27866486340. Its totient is φ = 8290855008.

The previous prime is 15545353463. The next prime is 15545353547. The reversal of 15545353545 is 54535354551.

15545353545 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 53 + 53 + 545 = 666.

15545353545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3362492169 + 12182861376 = 57987^2 + 110376^2 .

It is a de Polignac number, because none of the positive numbers 2^k-15545353545 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 15545353545.

It is not an unprimeable number, because it can be changed into a prime (15545353547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19191390 + ... + 19192199.

It is an arithmetic number, because the mean of its divisors is an integer number (1393324317).

Almost surely, 2^15545353545 is an apocalyptic number.

15545353545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15545353545 is a deficient number, since it is larger than the sum of its proper divisors (12321132795).

15545353545 is an equidigital number, since it uses as much as digits as its factorization.

15545353545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38383606 (or 38383597 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 45.

The spelling of 15545353545 in words is "fifteen billion, five hundred forty-five million, three hundred fifty-three thousand, five hundred forty-five".