15505005145 has 16 divisors (see below), whose sum is σ = 21758520960. Its totient is φ = 10384746624.

The previous prime is 15505005101. The next prime is 15505005181. The reversal of 15505005145 is 54150050551.

It is not a de Polignac number, because 15505005145 - 2⁹ = 15505004633 is a prime.

It is a super-3 number, since 3×15505005145³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5149660 + ... + 5152669.

It is an arithmetic number, because the mean of its divisors is an integer number (1359907560).

Almost surely, 2^15505005145 is an apocalyptic number.

It is an amenable number.

15505005145 is a deficient number, since it is larger than the sum of its proper divisors (6253515815).

15505005145 is a wasteful number, since it uses less digits than its factorization.

15505005145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10302384.

The product of its (nonzero) digits is 12500, while the sum is 31.

Adding to 15505005145 its reverse (54150050551), we get a palindrome (69655055696).

The spelling of 15505005145 in words is "fifteen billion, five hundred five million, five thousand, one hundred forty-five".