19908229673472 has 160 divisors (see below), whose sum is σ = 60725506664064. Its totient is φ = 5677549977600.

The previous prime is 19908229673443. The next prime is 19908229673483. The reversal of 19908229673472 is 27437692280991.

It is a super-2 number, since 2×19908229673472² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19908229673397 and 19908229673406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105572 + ... + 7528092.

Almost surely, 2^{19908229673472} is an apocalyptic number.

19908229673472 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 19908229673472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30362753332032).

19908229673472 is an abundant number, since it is smaller than the sum of its proper divisors (40817276990592).

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

19908229673472 is an equidigital number, since it uses as much as digits as its factorization.

19908229673472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423090 (or 3423074 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 69.

The spelling of 19908229673472 in words is "nineteen trillion, nine hundred eight billion, two hundred twenty-nine million, six hundred seventy-three thousand, four hundred seventy-two".