19973803152 has 80 divisors (see below), whose sum is σ = 54084538368. Its totient is φ = 6339822720.

The previous prime is 19973803151. The next prime is 19973803169. The reversal of 19973803152 is 25130837991.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (19973803151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205627 + ... + 286757.

Almost surely, 2^19973803152 is an apocalyptic number.

19973803152 is a gapful number since it is divisible by the number (12) 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 19973803152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27042269184).

19973803152 is an abundant number, since it is smaller than the sum of its proper divisors (34110735216).

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

19973803152 is a wasteful number, since it uses less digits than its factorization.

19973803152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81388 (or 81382 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 19973803152 in words is "nineteen billion, nine hundred seventy-three million, eight hundred three thousand, one hundred fifty-two".