816089761608 has 32 divisors (see below), whose sum is σ = 2225699350560. Its totient is φ = 247299927680.

The previous prime is 816089761583. The next prime is 816089761621. The reversal of 816089761608 is 806167980618.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1545624285 + ... + 1545624812.

It is an arithmetic number, because the mean of its divisors is an integer number (69553104705).

Almost surely, 2^816089761608 is an apocalyptic number.

816089761608 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

816089761608 is an abundant number, since it is smaller than the sum of its proper divisors (1409609588952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816089761608 is a wasteful number, since it uses less digits than its factorization.

816089761608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091249117 (or 3091249113 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The spelling of 816089761608 in words is "eight hundred sixteen billion, eighty-nine million, seven hundred sixty-one thousand, six hundred eight".