1683533868505 has 16 divisors (see below), whose sum is σ = 2075147391744. Its totient is φ = 1310233320000.

The previous prime is 1683533868449. The next prime is 1683533868539. The reversal of 1683533868505 is 5058683353861.

It is a happy number.

It is not a de Polignac number, because 1683533868505 - 2⁹ = 1683533867993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595380 + ... + 1929130.

It is an arithmetic number, because the mean of its divisors is an integer number (129696711984).

Almost surely, 2^{1683533868505} is an apocalyptic number.

It is an amenable number.

1683533868505 is a deficient number, since it is larger than the sum of its proper divisors (391613523239).

1683533868505 is a wasteful number, since it uses less digits than its factorization.

1683533868505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340616.

The product of its (nonzero) digits is 62208000, while the sum is 61.

The spelling of 1683533868505 in words is "one trillion, six hundred eighty-three billion, five hundred thirty-three million, eight hundred sixty-eight thousand, five hundred five".