816820158067 has 12 divisors (see below), whose sum is σ = 844474543248. Its totient is φ = 790044634800.

The previous prime is 816820158061. The next prime is 816820158083. The reversal of 816820158067 is 760851028618.

It is not a de Polignac number, because 816820158067 - 2⁷ = 816820157939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816820158061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1560058 + ... + 2016784.

It is an arithmetic number, because the mean of its divisors is an integer number (70372878604).

Almost surely, 2^816820158067 is an apocalyptic number.

816820158067 is a deficient number, since it is larger than the sum of its proper divisors (27654385181).

816820158067 is a wasteful number, since it uses less digits than its factorization.

816820158067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458650 (or 458619 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 816820158067 in words is "eight hundred sixteen billion, eight hundred twenty million, one hundred fifty-eight thousand, sixty-seven".