20479969983000 has 1536 divisors, whose sum is σ = 77761337472000. Its totient is φ = 4435430400000.

The previous prime is 20479969982921. The next prime is 20479969983001. The reversal of 20479969983000 is 38996997402.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479969983001) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 24704426586 + ... + 24704427414.

It is an arithmetic number, because the mean of its divisors is an integer number (50625870750).

Almost surely, 2^{20479969983000} is an apocalyptic number.

20479969983000 is a gapful number since it is divisible by the number (20) 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 20479969983000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38880668736000).

20479969983000 is an abundant number, since it is smaller than the sum of its proper divisors (57281367489000).

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

20479969983000 is a wasteful number, since it uses less digits than its factorization.

20479969983000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 66.

The spelling of 20479969983000 in words is "twenty trillion, four hundred seventy-nine billion, nine hundred sixty-nine million, nine hundred eighty-three thousand".