20138567047943 has 8 divisors (see below), whose sum is σ = 20273935122000. Its totient is φ = 20003201772928.

The previous prime is 20138567047919. The next prime is 20138567047993. The reversal of 20138567047943 is 34974076583102.

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 20138567047943 - 2⁴⁰ = 19039055420167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20138567047913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14903480 + ... + 16198482.

It is an arithmetic number, because the mean of its divisors is an integer number (2534241890250).

It is a 3-persistent number, because k⋅20138567047943 is pandigital for 1 ≤ k ≤ 3, but not for k = 4.

Almost surely, 2^{20138567047943} is an apocalyptic number.

20138567047943 is a deficient number, since it is larger than the sum of its proper divisors (135368074057).

20138567047943 is a wasteful number, since it uses less digits than its factorization.

20138567047943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399521.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 20138567047943 in words is "twenty trillion, one hundred thirty-eight billion, five hundred sixty-seven million, forty-seven thousand, nine hundred forty-three".