20129566750848 has 384 divisors, whose sum is σ = 59633271921600. Its totient is φ = 6515140853760.

The previous prime is 20129566750817. The next prime is 20129566750871. The reversal of 20129566750848 is 84805766592102.

20129566750848 is a `hidden beast` number, since 2 + 0 + 1 + 29 + 5 + 6 + 67 + 508 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2567215408 + ... + 2567223248.

Almost surely, 2^{20129566750848} 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 20129566750848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29816635960800).

20129566750848 is an abundant number, since it is smaller than the sum of its proper divisors (39503705170752).

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

20129566750848 is a wasteful number, since it uses less digits than its factorization.

20129566750848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 20129566750848 in words is "twenty trillion, one hundred twenty-nine billion, five hundred sixty-six million, seven hundred fifty thousand, eight hundred forty-eight".