19799205700 has 18 divisors (see below), whose sum is σ = 42964276586. Its totient is φ = 7919682240.

The previous prime is 19799205697. The next prime is 19799205719. The reversal of 19799205700 is 750299791.

It can be written as a sum of positive squares in 3 ways, for example, as 21846276 + 19777359424 = 4674^2 + 140632^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98995929 + ... + 98996128.

Almost surely, 2^19799205700 is an apocalyptic number.

19799205700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19799205700 is an abundant number, since it is smaller than the sum of its proper divisors (23165070886).

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

19799205700 is a wasteful number, since it uses less digits than its factorization.

19799205700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197992071 (or 197992064 counting only the distinct ones).

The product of its (nonzero) digits is 357210, while the sum is 49.

The spelling of 19799205700 in words is "nineteen billion, seven hundred ninety-nine million, two hundred five thousand, seven hundred".