1673648447668 has 24 divisors (see below), whose sum is σ = 2932924235360. Its totient is φ = 835670895840.

The previous prime is 1673648447663. The next prime is 1673648447729. The reversal of 1673648447668 is 8667448463761.

It is a super-2 number, since 2×1673648447668² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1673648447597 and 1673648447606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673648447663) 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, 8381023 + ... + 8578393.

Almost surely, 2^{1673648447668} is an apocalyptic number.

It is an amenable number.

1673648447668 is a deficient number, since it is larger than the sum of its proper divisors (1259275787692).

1673648447668 is a wasteful number, since it uses less digits than its factorization.

1673648447668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200287 (or 200285 counting only the distinct ones).

The product of its digits is 780337152, while the sum is 70.

The spelling of 1673648447668 in words is "one trillion, six hundred seventy-three billion, six hundred forty-eight million, four hundred forty-seven thousand, six hundred sixty-eight".