20381657788801 has 8 divisors (see below), whose sum is σ = 20545903430208. Its totient is φ = 20217797250000.

The previous prime is 20381657788717. The next prime is 20381657788837. The reversal of 20381657788801 is 10888775618302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20381657788801 - 2¹⁹ = 20381657264513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20381657788501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96169375 + ... + 96381076.

It is an arithmetic number, because the mean of its divisors is an integer number (2568237928776).

Almost surely, 2^{20381657788801} is an apocalyptic number.

It is an amenable number.

20381657788801 is a deficient number, since it is larger than the sum of its proper divisors (164245641407).

20381657788801 is a wasteful number, since it uses less digits than its factorization.

20381657788801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192551303.

The product of its (nonzero) digits is 36126720, while the sum is 64.

The spelling of 20381657788801 in words is "twenty trillion, three hundred eighty-one billion, six hundred fifty-seven million, seven hundred eighty-eight thousand, eight hundred one".