19691043300 has 216 divisors, whose sum is σ = 67376764000. Its totient is φ = 4974462720.

The previous prime is 19691043299. The next prime is 19691043371. The reversal of 19691043300 is 334019691.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 440376 + ... + 483024.

Almost surely, 2^19691043300 is an apocalyptic number.

19691043300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19691043300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33688382000).

19691043300 is an abundant number, since it is smaller than the sum of its proper divisors (47685720700).

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

19691043300 is a wasteful number, since it uses less digits than its factorization.

19691043300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42697 (or 42678 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The spelling of 19691043300 in words is "nineteen billion, six hundred ninety-one million, forty-three thousand, three hundred".