801814679619 has 4 divisors (see below), whose sum is σ = 1069086239496. Its totient is φ = 534543119744.

The previous prime is 801814679599. The next prime is 801814679657. The reversal of 801814679619 is 916976418108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 801814679619 - 2⁵ = 801814679587 is a prime.

It is a super-2 number, since 2×801814679619² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (801814679689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133635779934 + ... + 133635779939.

It is an arithmetic number, because the mean of its divisors is an integer number (267271559874).

Almost surely, 2^801814679619 is an apocalyptic number.

801814679619 is a deficient number, since it is larger than the sum of its proper divisors (267271559877).

801814679619 is a wasteful number, since it uses less digits than its factorization.

801814679619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267271559876.

The product of its (nonzero) digits is 5225472, while the sum is 60.

The spelling of 801814679619 in words is "eight hundred one billion, eight hundred fourteen million, six hundred seventy-nine thousand, six hundred nineteen".