1664998334996 has 12 divisors (see below), whose sum is σ = 2928389032800. Its totient is φ = 828315754200.

The previous prime is 1664998334969. The next prime is 1664998334999. The reversal of 1664998334996 is 6994338994661.

It is a super-3 number, since 3×1664998334996³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664998334999) 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, 1045852430 + ... + 1045854021.

It is an arithmetic number, because the mean of its divisors is an integer number (244032419400).

Almost surely, 2^{1664998334996} is an apocalyptic number.

It is an amenable number.

1664998334996 is a deficient number, since it is larger than the sum of its proper divisors (1263390697804).

1664998334996 is a wasteful number, since it uses less digits than its factorization.

1664998334996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091706654 (or 2091706652 counting only the distinct ones).

The product of its digits is 1632586752, while the sum is 77.

The spelling of 1664998334996 in words is "one trillion, six hundred sixty-four billion, nine hundred ninety-eight million, three hundred thirty-four thousand, nine hundred ninety-six".