80172770646 has 8 divisors (see below), whose sum is σ = 160345541304. Its totient is φ = 26724256880.

The previous prime is 80172770611. The next prime is 80172770669. The reversal of 80172770646 is 64607727108.

It is a sphenic number, since it is the product of 3 distinct primes.

80172770646 is an admirable number.

It is a super-2 number, since 2×80172770646² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80172770595 and 80172770604.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6681064215 + ... + 6681064226.

It is an arithmetic number, because the mean of its divisors is an integer number (20043192663).

Almost surely, 2^80172770646 is an apocalyptic number.

80172770646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80172770646 is a wasteful number, since it uses less digits than its factorization.

80172770646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13362128446.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 80172770646 in words is "eighty billion, one hundred seventy-two million, seven hundred seventy thousand, six hundred forty-six".