801337391821 has 8 divisors (see below), whose sum is σ = 808846119360. Its totient is φ = 793829027328.

The previous prime is 801337391809. The next prime is 801337391867. The reversal of 801337391821 is 128193733108.

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 801337391821 - 2¹¹ = 801337389773 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 (801337398821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6738445 + ... + 6856333.

It is an arithmetic number, because the mean of its divisors is an integer number (101105764920).

Almost surely, 2^801337391821 is an apocalyptic number.

It is an amenable number.

801337391821 is a deficient number, since it is larger than the sum of its proper divisors (7508727539).

801337391821 is a wasteful number, since it uses less digits than its factorization.

801337391821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181523.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 801337391821 in words is "eight hundred one billion, three hundred thirty-seven million, three hundred ninety-one thousand, eight hundred twenty-one".