80448025521 has 8 divisors (see below), whose sum is σ = 107265905920. Its totient is φ = 53631081072.

The previous prime is 80448025517. The next prime is 80448025561. The reversal of 80448025521 is 12552084408.

It is a happy number.

80448025521 is a nontrivial binomial coefficient, being equal to C(401119, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80448025521 - 2² = 80448025517 is a prime.

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 80448025521.

It is not an unprimeable number, because it can be changed into a prime (80448025561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 401118.

It is an arithmetic number, because the mean of its divisors is an integer number (13408238240).

Almost surely, 2^80448025521 is an apocalyptic number.

80448025521 is the 401118-th triangular number.

It is an amenable number.

80448025521 is a deficient number, since it is larger than the sum of its proper divisors (26817880399).

80448025521 is a wasteful number, since it uses less digits than its factorization.

80448025521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467975.

The product of its (nonzero) digits is 102400, while the sum is 39.

The spelling of 80448025521 in words is "eighty billion, four hundred forty-eight million, twenty-five thousand, five hundred twenty-one".