1609368664450 has 48 divisors (see below), whose sum is σ = 3022016864256. Its totient is φ = 637627779200.

The previous prime is 1609368664441. The next prime is 1609368664471. The reversal of 1609368664450 is 544668639061.

It is a happy number.

It is a super-2 number, since 2×1609368664450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1863519 + ... + 2586781.

It is an arithmetic number, because the mean of its divisors is an integer number (62958684672).

Almost surely, 2^{1609368664450} is an apocalyptic number.

1609368664450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1609368664450 is a deficient number, since it is larger than the sum of its proper divisors (1412648199806).

1609368664450 is a wasteful number, since it uses less digits than its factorization.

1609368664450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723699 (or 723694 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 1609368664450 in words is "one trillion, six hundred nine billion, three hundred sixty-eight million, six hundred sixty-four thousand, four hundred fifty".