80421170796625 has 16 divisors (see below), whose sum is σ = 102010959215568. Its totient is φ = 63282232752000.

The previous prime is 80421170796623. The next prime is 80421170796689. The reversal of 80421170796625 is 52669707112408.

It can be written as a sum of positive squares in 8 ways, for example, as 69275508422481 + 11145662374144 = 8323191^2 + 3338512^2 .

It is not a de Polignac number, because 80421170796625 - 2¹ = 80421170796623 is a prime.

It is a super-2 number, since 2×80421170796625² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80421170796625.

It is not an unprimeable number, because it can be changed into a prime (80421170796623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5273511772 + ... + 5273527021.

It is an arithmetic number, because the mean of its divisors is an integer number (6375684950973).

Almost surely, 2^{80421170796625} is an apocalyptic number.

It is an amenable number.

80421170796625 is a deficient number, since it is larger than the sum of its proper divisors (21589788418943).

80421170796625 is a wasteful number, since it uses less digits than its factorization.

80421170796625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10547038869 (or 10547038859 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 80421170796625 in words is "eighty trillion, four hundred twenty-one billion, one hundred seventy million, seven hundred ninety-six thousand, six hundred twenty-five".