16210505644 has 24 divisors (see below), whose sum is σ = 28541500736. Its totient is φ = 8055936000.

The previous prime is 16210505627. The next prime is 16210505653. The reversal of 16210505644 is 44650501261.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438604 + ... + 474124.

Almost surely, 2^16210505644 is an apocalyptic number.

It is an amenable number.

16210505644 is a deficient number, since it is larger than the sum of its proper divisors (12330995092).

16210505644 is a wasteful number, since it uses less digits than its factorization.

16210505644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36217 (or 36215 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 16210505644 in words is "sixteen billion, two hundred ten million, five hundred five thousand, six hundred forty-four".