19722680472 has 128 divisors (see below), whose sum is σ = 54683320320. Its totient is φ = 5877648000.

The previous prime is 19722680449. The next prime is 19722680479. The reversal of 19722680472 is 27408622791.

It is a super-2 number, since 2×19722680472² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19722680479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9202233 + ... + 9204375.

It is an arithmetic number, because the mean of its divisors is an integer number (427213440).

Almost surely, 2^19722680472 is an apocalyptic number.

19722680472 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 19722680472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27341660160).

19722680472 is an abundant number, since it is smaller than the sum of its proper divisors (34960639848).

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

19722680472 is a wasteful number, since it uses less digits than its factorization.

19722680472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 19722680472 in words is "nineteen billion, seven hundred twenty-two million, six hundred eighty thousand, four hundred seventy-two".