1664325052252 has 24 divisors (see below), whose sum is σ = 2925427019760. Its totient is φ = 828489108480.

The previous prime is 1664325052223. The next prime is 1664325052321. The reversal of 1664325052252 is 2522505234661.

It is a junction number, because it is equal to n+sod(n) for n = 1664325052199 and 1664325052208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32520828 + ... + 32571964.

It is an arithmetic number, because the mean of its divisors is an integer number (121892792490).

Almost surely, 2^{1664325052252} is an apocalyptic number.

It is an amenable number.

1664325052252 is a deficient number, since it is larger than the sum of its proper divisors (1261101967508).

1664325052252 is a wasteful number, since it uses less digits than its factorization.

1664325052252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86901 (or 86899 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 1664325052252 in words is "one trillion, six hundred sixty-four billion, three hundred twenty-five million, fifty-two thousand, two hundred fifty-two".