15530345145 has 24 divisors (see below), whose sum is σ = 30764874816. Its totient is φ = 7099586208.

The previous prime is 15530345101. The next prime is 15530345209. The reversal of 15530345145 is 54154303551.

15530345145 is a `hidden beast` number, since 1 + 5 + 530 + 34 + 51 + 45 = 666.

It is not a de Polignac number, because 15530345145 - 2¹⁴ = 15530328761 is a prime.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 24651027 + ... + 24651656.

It is an arithmetic number, because the mean of its divisors is an integer number (1281869784).

Almost surely, 2^15530345145 is an apocalyptic number.

15530345145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15530345145 is a deficient number, since it is larger than the sum of its proper divisors (15234529671).

15530345145 is a wasteful number, since it uses less digits than its factorization.

15530345145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49302701 (or 49302698 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 15530345145 its reverse (54154303551), we get a palindrome (69684648696).

The spelling of 15530345145 in words is "fifteen billion, five hundred thirty million, three hundred forty-five thousand, one hundred forty-five".