19870822700 has 18 divisors (see below), whose sum is σ = 43119685476. Its totient is φ = 7948329040.

The previous prime is 19870822693. The next prime is 19870822703. The reversal of 19870822700 is 722807891.

It is not an unprimeable number, because it can be changed into a prime (19870822703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99354014 + ... + 99354213.

It is an arithmetic number, because the mean of its divisors is an integer number (2395538082).

Almost surely, 2^19870822700 is an apocalyptic number.

19870822700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19870822700 is an abundant number, since it is smaller than the sum of its proper divisors (23248862776).

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

19870822700 is a wasteful number, since it uses less digits than its factorization.

19870822700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198708241 (or 198708234 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 19870822700 in words is "nineteen billion, eight hundred seventy million, eight hundred twenty-two thousand, seven hundred".