1680238987043 has 16 divisors (see below), whose sum is σ = 1770472704000. Its totient is φ = 1590186105792.

The previous prime is 1680238987039. The next prime is 1680238987073. The reversal of 1680238987043 is 3407898320861.

It is a happy number.

It is not a de Polignac number, because 1680238987043 - 2² = 1680238987039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680238987003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91661903 + ... + 91680231.

It is an arithmetic number, because the mean of its divisors is an integer number (110654544000).

Almost surely, 2^{1680238987043} is an apocalyptic number.

1680238987043 is a deficient number, since it is larger than the sum of its proper divisors (90233716957).

1680238987043 is a wasteful number, since it uses less digits than its factorization.

1680238987043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22994.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 1680238987043 in words is "one trillion, six hundred eighty billion, two hundred thirty-eight million, nine hundred eighty-seven thousand, forty-three".