19722851232 has 240 divisors, whose sum is σ = 61900396992. Its totient is φ = 5495024640.

The previous prime is 19722851231. The next prime is 19722851243. The reversal of 19722851232 is 23215822791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (19722851231) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9449293 + ... + 9451379.

Almost surely, 2^19722851232 is an apocalyptic number.

19722851232 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 19722851232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30950198496).

19722851232 is an abundant number, since it is smaller than the sum of its proper divisors (42177545760).

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

19722851232 is an equidigital number, since it uses as much as digits as its factorization.

19722851232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2140 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The spelling of 19722851232 in words is "nineteen billion, seven hundred twenty-two million, eight hundred fifty-one thousand, two hundred thirty-two".