80664480466691 has 16 divisors (see below), whose sum is σ = 88805619302400. Its totient is φ = 72658019412000.

The previous prime is 80664480466663. The next prime is 80664480466709. The reversal of 80664480466691 is 19666408446608.

It is a de Polignac number, because none of the positive numbers 2^k-80664480466691 is a prime.

It is a super-2 number, since 2×80664480466691² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80664480466391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288410366 + ... + 288689916.

It is an arithmetic number, because the mean of its divisors is an integer number (5550351206400).

Almost surely, 2^{80664480466691} is an apocalyptic number.

80664480466691 is a deficient number, since it is larger than the sum of its proper divisors (8141138835709).

80664480466691 is a wasteful number, since it uses less digits than its factorization.

80664480466691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520330.

The product of its (nonzero) digits is 286654464, while the sum is 68.

The spelling of 80664480466691 in words is "eighty trillion, six hundred sixty-four billion, four hundred eighty million, four hundred sixty-six thousand, six hundred ninety-one".