1448217521791 has 8 divisors (see below), whose sum is σ = 1465777136880. Its totient is φ = 1430660554752.

The previous prime is 1448217521743. The next prime is 1448217521801. The reversal of 1448217521791 is 1971257128441.

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

It is a cyclic number.

It is not a de Polignac number, because 1448217521791 - 2⁹ = 1448217521279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448217521741) 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, 449665 + ... + 1760293.

It is an arithmetic number, because the mean of its divisors is an integer number (183222142110).

Almost surely, 2^{1448217521791} is an apocalyptic number.

1448217521791 is a deficient number, since it is larger than the sum of its proper divisors (17559615089).

1448217521791 is a wasteful number, since it uses less digits than its factorization.

1448217521791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324025.

The product of its digits is 1128960, while the sum is 52.

The spelling of 1448217521791 in words is "one trillion, four hundred forty-eight billion, two hundred seventeen million, five hundred twenty-one thousand, seven hundred ninety-one".