80692484778 has 12 divisors (see below), whose sum is σ = 174833717058. Its totient is φ = 26897494920.

The previous prime is 80692484737. The next prime is 80692484783. The reversal of 80692484778 is 87748429608.

80692484778 is a `hidden beast` number, since 80 + 6 + 9 + 2 + 484 + 7 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 79928902089 + 763582689 = 282717^2 + 27633^2 .

It is a super-3 number, since 3×80692484778³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2241457893 + ... + 2241457928.

Almost surely, 2^80692484778 is an apocalyptic number.

80692484778 is an abundant number, since it is smaller than the sum of its proper divisors (94141232280).

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

80692484778 is a wasteful number, since it uses less digits than its factorization.

80692484778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482915829 (or 4482915826 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 80692484778 in words is "eighty billion, six hundred ninety-two million, four hundred eighty-four thousand, seven hundred seventy-eight".