20751066159443 has 8 divisors (see below), whose sum is σ = 20768776767600. Its totient is φ = 20733356083968.

The previous prime is 20751066159403. The next prime is 20751066159457. The reversal of 20751066159443 is 34495166015702.

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 20751066159443 - 2¹⁸ = 20751065897299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20751066159403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142000148 + ... + 142146206.

It is an arithmetic number, because the mean of its divisors is an integer number (2596097095950).

Almost surely, 2^{20751066159443} is an apocalyptic number.

20751066159443 is a deficient number, since it is larger than the sum of its proper divisors (17710608157).

20751066159443 is a wasteful number, since it uses less digits than its factorization.

20751066159443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266341.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 20751066159443 in words is "twenty trillion, seven hundred fifty-one billion, sixty-six million, one hundred fifty-nine thousand, four hundred forty-three".