19992251139952 has 160 divisors (see below), whose sum is σ = 50369551142400. Its totient is φ = 7464901192704.

The previous prime is 19992251139919. The next prime is 19992251139977. The reversal of 19992251139952 is 25993115229991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6098343 + ... + 8784889.

It is an arithmetic number, because the mean of its divisors is an integer number (314809694640).

Almost surely, 2^{19992251139952} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19992251139952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25184775571200).

19992251139952 is an abundant number, since it is smaller than the sum of its proper divisors (30377300002448).

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

19992251139952 is a wasteful number, since it uses less digits than its factorization.

19992251139952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686863 (or 2686857 counting only the distinct ones).

The product of its digits is 35429400, while the sum is 67.

The spelling of 19992251139952 in words is "nineteen trillion, nine hundred ninety-two billion, two hundred fifty-one million, one hundred thirty-nine thousand, nine hundred fifty-two".