80633665140625 has 21 divisors (see below), whose sum is σ = 100792194355117. Its totient is φ = 64506034150000.

The previous prime is 80633665140617. The next prime is 80633665140683. The reversal of 80633665140625 is 52604156633608.

The square root of 80633665140625 is 8979625.

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

It can be written as a sum of positive squares in 10 ways, for example, as 70788277934929 + 9845387205696 = 8413577^2 + 3137736^2 .

It is not a de Polignac number, because 80633665140625 - 2³ = 80633665140617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1122417207 + ... + 1122489043.

Almost surely, 2^{80633665140625} is an apocalyptic number.

80633665140625 is the 8979625-th square number.

80633665140625 is the 4489813-rd centered octagonal number.

It is an amenable number.

80633665140625 is a deficient number, since it is larger than the sum of its proper divisors (20158529214492).

80633665140625 is an frugal number, since it uses more digits than its factorization.

80633665140625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143704 (or 71842 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 55.

The spelling of 80633665140625 in words is "eighty trillion, six hundred thirty-three billion, six hundred sixty-five million, one hundred forty thousand, six hundred twenty-five".