1683663872454 has 80 divisors (see below), whose sum is σ = 3862056432960. Its totient is φ = 547933060080.

The previous prime is 1683663872441. The next prime is 1683663872461. The reversal of 1683663872454 is 4542783663861.

It is a happy number.

1683663872454 is a `hidden beast` number, since 1 + 6 + 8 + 3 + 6 + 6 + 387 + 245 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1683663872391 and 1683663872400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16465417 + ... + 16567355.

It is an arithmetic number, because the mean of its divisors is an integer number (48275705412).

Almost surely, 2^{1683663872454} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1683663872454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931028216480).

1683663872454 is an abundant number, since it is smaller than the sum of its proper divisors (2178392560506).

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

1683663872454 is a wasteful number, since it uses less digits than its factorization.

1683663872454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104367 (or 104358 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 63.

The spelling of 1683663872454 in words is "one trillion, six hundred eighty-three billion, six hundred sixty-three million, eight hundred seventy-two thousand, four hundred fifty-four".