1673220401568 has 384 divisors, whose sum is σ = 5274957219840. Its totient is φ = 514033827840.

The previous prime is 1673220401539. The next prime is 1673220401627. The reversal of 1673220401568 is 8651040223761.

1673220401568 is a `hidden beast` number, since 1 + 67 + 3 + 2 + 20 + 4 + 0 + 1 + 568 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 472525878 + ... + 472529418.

It is an arithmetic number, because the mean of its divisors is an integer number (13736867760).

Almost surely, 2^{1673220401568} is an apocalyptic number.

1673220401568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673220401568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2637478609920).

1673220401568 is an abundant number, since it is smaller than the sum of its proper divisors (3601736818272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1673220401568 is a wasteful number, since it uses less digits than its factorization.

1673220401568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237 (or 4223 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1673220401568 in words is "one trillion, six hundred seventy-three billion, two hundred twenty million, four hundred one thousand, five hundred sixty-eight".