16444403454650 has 24 divisors (see below), whose sum is σ = 30599121005244. Its totient is φ = 6575066633600.

The previous prime is 16444403454643. The next prime is 16444403454667. The reversal of 16444403454650 is 5645430444461.

It can be written as a sum of positive squares in 6 ways, for example, as 6958416170161 + 9485987284489 = 2637881^2 + 3079933^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67245437 + ... + 67489536.

Almost surely, 2^{16444403454650} is an apocalyptic number.

16444403454650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16444403454650 is a deficient number, since it is larger than the sum of its proper divisors (14154717550594).

16444403454650 is a wasteful number, since it uses less digits than its factorization.

16444403454650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134737426 (or 134737421 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 50.

The spelling of 16444403454650 in words is "sixteen trillion, four hundred forty-four billion, four hundred three million, four hundred fifty-four thousand, six hundred fifty".