1664751703013 has 4 divisors (see below), whose sum is σ = 1902573374880. Its totient is φ = 1426930031148.

The previous prime is 1664751703007. The next prime is 1664751703019. The reversal of 1664751703013 is 3103071574661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1664751703007) and next prime (1664751703019).

It is a cyclic number.

It is not a de Polignac number, because 1664751703013 - 2⁶ = 1664751702949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664751703019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118910835923 + ... + 118910835936.

It is an arithmetic number, because the mean of its divisors is an integer number (475643343720).

Almost surely, 2^{1664751703013} is an apocalyptic number.

It is an amenable number.

1664751703013 is a deficient number, since it is larger than the sum of its proper divisors (237821671867).

1664751703013 is an equidigital number, since it uses as much as digits as its factorization.

1664751703013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237821671866.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 1664751703013 in words is "one trillion, six hundred sixty-four billion, seven hundred fifty-one million, seven hundred three thousand, thirteen".