1448481821857 has 8 divisors (see below), whose sum is σ = 1682545629632. Its totient is φ = 1221202472400.

The previous prime is 1448481821803. The next prime is 1448481821873. The reversal of 1448481821857 is 7581281848441.

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 1448481821857 - 2¹¹ = 1448481819809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a junction number, because it is equal to n+sod(n) for n = 1448481821795 and 1448481821804.

It is not an unprimeable number, because it can be changed into a prime (1448481821887) 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, 1696114119 + ... + 1696114972.

It is an arithmetic number, because the mean of its divisors is an integer number (210318203704).

Almost surely, 2^{1448481821857} is an apocalyptic number.

It is an amenable number.

1448481821857 is a deficient number, since it is larger than the sum of its proper divisors (234063807775).

1448481821857 is an equidigital number, since it uses as much as digits as its factorization.

1448481821857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392229159.

The product of its digits is 18350080, while the sum is 61.

The spelling of 1448481821857 in words is "one trillion, four hundred forty-eight billion, four hundred eighty-one million, eight hundred twenty-one thousand, eight hundred fifty-seven".