16445534064 has 20 divisors (see below), whose sum is σ = 42484296456. Its totient is φ = 5481844672.

The previous prime is 16445534057. The next prime is 16445534071. The reversal of 16445534064 is 46043554461.

It is an interprime number because it is at equal distance from previous prime (16445534057) and next prime (16445534071).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171307599 + ... + 171307694.

Almost surely, 2^16445534064 is an apocalyptic number.

It is an amenable number.

16445534064 is an abundant number, since it is smaller than the sum of its proper divisors (26038762392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16445534064 is a wasteful number, since it uses less digits than its factorization.

16445534064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342615304 (or 342615298 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 16445534064 in words is "sixteen billion, four hundred forty-five million, five hundred thirty-four thousand, sixty-four".