19550647116 has 864 divisors, whose sum is σ = 72526598144. Its totient is φ = 4311014400.

The previous prime is 19550647099. The next prime is 19550647121. The reversal of 19550647116 is 61174605591.

19550647116 is a `hidden beast` number, since 1 + 95 + 506 + 47 + 1 + 16 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 454666191 + ... + 454666233.

Almost surely, 2^19550647116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19550647116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36263299072).

19550647116 is an abundant number, since it is smaller than the sum of its proper divisors (52975951028).

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

19550647116 is a wasteful number, since it uses less digits than its factorization.

19550647116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

It can be divided in two parts, 19550 and 647116, that added together give a palindrome (666666).

The spelling of 19550647116 in words is "nineteen billion, five hundred fifty million, six hundred forty-seven thousand, one hundred sixteen".