1968645776003 has 4 divisors (see below), whose sum is σ = 1968649507680. Its totient is φ = 1968642044328.

The previous prime is 1968645775969. The next prime is 1968645776011. The reversal of 1968645776003 is 3006775468691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968645776003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968645776023) 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, 911963 + ... + 2183796.

It is an arithmetic number, because the mean of its divisors is an integer number (492162376920).

Almost surely, 2^{1968645776003} is an apocalyptic number.

1968645776003 is a deficient number, since it is larger than the sum of its proper divisors (3731677).

1968645776003 is an equidigital number, since it uses as much as digits as its factorization.

1968645776003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731676.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 1968645776003 in words is "one trillion, nine hundred sixty-eight billion, six hundred forty-five million, seven hundred seventy-six thousand, three".