15505116108 has 24 divisors (see below), whose sum is σ = 36257782512. Its totient is φ = 5157060864.

The previous prime is 15505116103. The next prime is 15505116131. The reversal of 15505116108 is 80161150551.

It is a super-2 number, since 2×15505116108² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15505116103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408185 + ... + 1419152.

It is an arithmetic number, because the mean of its divisors is an integer number (1510740938).

Almost surely, 2^15505116108 is an apocalyptic number.

It is an amenable number.

15505116108 is an abundant number, since it is smaller than the sum of its proper divisors (20752666404).

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

15505116108 is a wasteful number, since it uses less digits than its factorization.

15505116108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827801 (or 2827799 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 33.

Adding to 15505116108 its reverse (80161150551), we get a palindrome (95666266659).

The spelling of 15505116108 in words is "fifteen billion, five hundred five million, one hundred sixteen thousand, one hundred eight".