800381565543 has 8 divisors (see below), whose sum is σ = 1219629052288. Its totient is φ = 457360894584.

The previous prime is 800381565527. The next prime is 800381565551. The reversal of 800381565543 is 345565183008.

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

It is not a de Polignac number, because 800381565543 - 2⁴ = 800381565527 is a prime.

It is a super-2 number, since 2×800381565543² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800381565492 and 800381565501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800381565563) 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, 19056703921 + ... + 19056703962.

It is an arithmetic number, because the mean of its divisors is an integer number (152453631536).

Almost surely, 2^800381565543 is an apocalyptic number.

800381565543 is a deficient number, since it is larger than the sum of its proper divisors (419247486745).

800381565543 is a wasteful number, since it uses less digits than its factorization.

800381565543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38113407893.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 800381565543 in words is "eight hundred billion, three hundred eighty-one million, five hundred sixty-five thousand, five hundred forty-three".