15505112008 has 8 divisors (see below), whose sum is σ = 29072085030. Its totient is φ = 7752556000.

The previous prime is 15505111991. The next prime is 15505112017. The reversal of 15505112008 is 80021150551.

It can be written as a sum of positive squares in only one way, i.e., 15109818084 + 395293924 = 122922^2 + 19882^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969069493 + ... + 969069508.

Almost surely, 2^15505112008 is an apocalyptic number.

It is an amenable number.

15505112008 is a deficient number, since it is larger than the sum of its proper divisors (13566973022).

15505112008 is a wasteful number, since it uses less digits than its factorization.

15505112008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938139007 (or 1938139003 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 15505112008 its reverse (80021150551), we get a palindrome (95526262559).

The spelling of 15505112008 in words is "fifteen billion, five hundred five million, one hundred twelve thousand, eight".