448314542426521 has 4 divisors (see below), whose sum is σ = 454628831756544. Its totient is φ = 442000253096500.

The previous prime is 448314542426489. The next prime is 448314542426591. The reversal of 448314542426521 is 125624245413844.

It is the 8644021-st star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 448314542426521 - 2⁵ = 448314542426489 is a prime.

It is a super-2 number, since 2×448314542426521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (448314542426591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3157144664905 + ... + 3157144665046.

It is an arithmetic number, because the mean of its divisors is an integer number (113657207939136).

Almost surely, 2^{448314542426521} is an apocalyptic number.

448314542426521 is the 11317680-th centered heptagonal number.

It is an amenable number.

448314542426521 is a deficient number, since it is larger than the sum of its proper divisors (6314289330023).

448314542426521 is an equidigital number, since it uses as much as digits as its factorization.

448314542426521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314289330022.

The product of its digits is 29491200, while the sum is 55.

The spelling of 448314542426521 in words is "four hundred forty-eight trillion, three hundred fourteen billion, five hundred forty-two million, four hundred twenty-six thousand, five hundred twenty-one".