19550116500 has 96 divisors (see below), whose sum is σ = 59926339200. Its totient is φ = 4938969600.

The previous prime is 19550116477. The next prime is 19550116507. The reversal of 19550116500 is 561105591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19550116507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314485 + ... + 371484.

It is an arithmetic number, because the mean of its divisors is an integer number (624232700).

Almost surely, 2^19550116500 is an apocalyptic number.

19550116500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19550116500 is an abundant number, since it is smaller than the sum of its proper divisors (40376222700).

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

19550116500 is a wasteful number, since it uses less digits than its factorization.

19550116500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686010 (or 685998 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 33.

The spelling of 19550116500 in words is "nineteen billion, five hundred fifty million, one hundred sixteen thousand, five hundred".