1663856152068 has 48 divisors (see below), whose sum is σ = 4235794327296. Its totient is φ = 504136438560.

The previous prime is 1663856152043. The next prime is 1663856152097. The reversal of 1663856152068 is 8602516583661.

It is a junction number, because it is equal to n+sod(n) for n = 1663856151999 and 1663856152017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296355 + ... + 1848117.

It is an arithmetic number, because the mean of its divisors is an integer number (88245715152).

Almost surely, 2^{1663856152068} is an apocalyptic number.

It is an amenable number.

1663856152068 is an abundant number, since it is smaller than the sum of its proper divisors (2571938175228).

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

1663856152068 is a wasteful number, since it uses less digits than its factorization.

1663856152068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559904 (or 1559902 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 1663856152068 in words is "one trillion, six hundred sixty-three billion, eight hundred fifty-six million, one hundred fifty-two thousand, sixty-eight".