1680239089444 has 12 divisors (see below), whose sum is σ = 2980698111244. Its totient is φ = 828611057664.

The previous prime is 1680239089369. The next prime is 1680239089447. The reversal of 1680239089444 is 4449809320861.

It can be written as a sum of positive squares in 2 ways, for example, as 1167182051044 + 513057038400 = 1080362^2 + 716280^2 .

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1680239089447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2877121437 + ... + 2877122020.

Almost surely, 2^{1680239089444} is an apocalyptic number.

It is an amenable number.

1680239089444 is a deficient number, since it is larger than the sum of its proper divisors (1300459021800).

1680239089444 is a wasteful number, since it uses less digits than its factorization.

1680239089444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754243534 (or 5754243532 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 1680239089444 in words is "one trillion, six hundred eighty billion, two hundred thirty-nine million, eighty-nine thousand, four hundred forty-four".