20710388203138 has 8 divisors (see below), whose sum is σ = 32416259796288. Its totient is φ = 9904968271044.

The previous prime is 20710388203103. The next prime is 20710388203187. The reversal of 20710388203138 is 83130288301702.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 450225830503 = 20710388203138 / (2 + 0 + 7 + 1 + 0 + 3 + 8 + 8 + 2 + 0 + 3 + 1 + 3 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225112915206 + ... + 225112915297.

It is an arithmetic number, because the mean of its divisors is an integer number (4052032474536).

Almost surely, 2^{20710388203138} is an apocalyptic number.

20710388203138 is a deficient number, since it is larger than the sum of its proper divisors (11705871593150).

20710388203138 is a wasteful number, since it uses less digits than its factorization.

20710388203138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450225830528.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 20710388203138 in words is "twenty trillion, seven hundred ten billion, three hundred eighty-eight million, two hundred three thousand, one hundred thirty-eight".