1680565162818 has 64 divisors (see below), whose sum is σ = 3460213209600. Its totient is φ = 543912140160.

The previous prime is 1680565162813. The next prime is 1680565162823. The reversal of 1680565162818 is 8182615650861.

It is an interprime number because it is at equal distance from previous prime (1680565162813) and next prime (1680565162823).

It is a super-2 number, since 2×1680565162818² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1680565162813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182486998 + ... + 182496206.

It is an arithmetic number, because the mean of its divisors is an integer number (54065831400).

Almost surely, 2^{1680565162818} is an apocalyptic number.

1680565162818 is an abundant number, since it is smaller than the sum of its proper divisors (1779648046782).

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

1680565162818 is a wasteful number, since it uses less digits than its factorization.

1680565162818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15567.

The product of its (nonzero) digits is 5529600, while the sum is 57.

The spelling of 1680565162818 in words is "one trillion, six hundred eighty billion, five hundred sixty-five million, one hundred sixty-two thousand, eight hundred eighteen".