1664253535063 has 8 divisors (see below), whose sum is σ = 1928058890528. Its totient is φ = 1406961892224.

The previous prime is 1664253534991. The next prime is 1664253535097. The reversal of 1664253535063 is 3605353524661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1664253535063 - 2⁹ = 1664253534551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1664253534998 and 1664253535016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664253532063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628427606 + ... + 1628428627.

It is an arithmetic number, because the mean of its divisors is an integer number (241007361316).

Almost surely, 2^{1664253535063} is an apocalyptic number.

1664253535063 is a deficient number, since it is larger than the sum of its proper divisors (263805355465).

1664253535063 is an equidigital number, since it uses as much as digits as its factorization.

1664253535063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256856313.

The product of its (nonzero) digits is 5832000, while the sum is 49.

The spelling of 1664253535063 in words is "one trillion, six hundred sixty-four billion, two hundred fifty-three million, five hundred thirty-five thousand, sixty-three".