15577122116 has 24 divisors (see below), whose sum is σ = 27575745120. Its totient is φ = 7698398400.

The previous prime is 15577122107. The next prime is 15577122139. The reversal of 15577122116 is 61122177551.

It is a self number, because there is not a number n which added to its sum of digits gives 15577122116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393871 + ... + 1405001.

It is an arithmetic number, because the mean of its divisors is an integer number (1148989380).

Almost surely, 2^15577122116 is an apocalyptic number.

It is an amenable number.

15577122116 is a deficient number, since it is larger than the sum of its proper divisors (11998623004).

15577122116 is a wasteful number, since it uses less digits than its factorization.

15577122116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15155 (or 15153 counting only the distinct ones).

The product of its digits is 29400, while the sum is 38.

Adding to 15577122116 its reverse (61122177551), we get a palindrome (76699299667).

The spelling of 15577122116 in words is "fifteen billion, five hundred seventy-seven million, one hundred twenty-two thousand, one hundred sixteen".