1668697497004 has 6 divisors (see below), whose sum is σ = 2920220619764. Its totient is φ = 834348748500.

The previous prime is 1668697496897. The next prime is 1668697497013. The reversal of 1668697497004 is 4007947968661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208587187122 + ... + 208587187129.

Almost surely, 2^{1668697497004} is an apocalyptic number.

It is an amenable number.

1668697497004 is a deficient number, since it is larger than the sum of its proper divisors (1251523122760).

1668697497004 is a wasteful number, since it uses less digits than its factorization.

1668697497004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417174374255 (or 417174374253 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 67.

The spelling of 1668697497004 in words is "one trillion, six hundred sixty-eight billion, six hundred ninety-seven million, four hundred ninety-seven thousand, four".