19998925229232 has 120 divisors (see below), whose sum is σ = 58047806414416. Its totient is φ = 6665658552576.

The previous prime is 19998925229209. The next prime is 19998925229249. The reversal of 19998925229232 is 23292252989991.

19998925229232 is a `hidden beast` number, since 1 + 9 + 9 + 9 + 8 + 9 + 2 + 522 + 92 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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 23 ways as a sum of consecutive naturals, for example, 40489098 + ... + 40980054.

Almost surely, 2^{19998925229232} is an apocalyptic number.

19998925229232 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 19998925229232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29023903207208).

19998925229232 is an abundant number, since it is smaller than the sum of its proper divisors (38048881185184).

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

19998925229232 is a wasteful number, since it uses less digits than its factorization.

19998925229232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501457 (or 501439 counting only the distinct ones).

The product of its digits is 226748160, while the sum is 72.

The spelling of 19998925229232 in words is "nineteen trillion, nine hundred ninety-eight billion, nine hundred twenty-five million, two hundred twenty-nine thousand, two hundred thirty-two".