80669827766 has 32 divisors (see below), whose sum is σ = 135827676576. Its totient is φ = 35620000000.

The previous prime is 80669827687. The next prime is 80669827811. The reversal of 80669827766 is 66772896608.

It is a super-2 number, since 2×80669827766² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224735 + ... + 460266.

It is an arithmetic number, because the mean of its divisors is an integer number (4244614893).

Almost surely, 2^80669827766 is an apocalyptic number.

80669827766 is a deficient number, since it is larger than the sum of its proper divisors (55157848810).

80669827766 is a wasteful number, since it uses less digits than its factorization.

80669827766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685168.

The product of its (nonzero) digits is 73156608, while the sum is 65.

The spelling of 80669827766 in words is "eighty billion, six hundred sixty-nine million, eight hundred twenty-seven thousand, seven hundred sixty-six".