80748610569 has 81 divisors (see below), whose sum is σ = 131049746919. Its totient is φ = 47875782240.

The previous prime is 80748610543. The next prime is 80748610571. The reversal of 80748610569 is 96501684708.

The square root of 80748610569 is 284163.

It is a perfect power (a square), and thus also a powerful number.

80748610569 is a `hidden beast` number, since 8 + 0 + 74 + 8 + 6 + 1 + 0 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56281394169 + 24467216400 = 237237^2 + 156420^2 .

It is not a de Polignac number, because 80748610569 - 2⁷ = 80748610441 is a prime.

It is a super-2 number, since 2×80748610569² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80748611569) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 740812887 + ... + 740812995.

Almost surely, 2^80748610569 is an apocalyptic number.

80748610569 is the 284163-rd square number.

80748610569 is the 142082-nd centered octagonal number.

It is an amenable number.

80748610569 is a deficient number, since it is larger than the sum of its proper divisors (50301136350).

80748610569 is a wasteful number, since it uses less digits than its factorization.

80748610569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 80748610569 in words is "eighty billion, seven hundred forty-eight million, six hundred ten thousand, five hundred sixty-nine".