16905725664 has 24 divisors (see below), whose sum is σ = 44377530120. Its totient is φ = 5635241856.

The previous prime is 16905725651. The next prime is 16905725729. The reversal of 16905725664 is 46652750961.

It is a tau number, because it is divible by the number of its divisors (24).

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, 88050559 + ... + 88050750.

It is an arithmetic number, because the mean of its divisors is an integer number (1849063755).

Almost surely, 2^16905725664 is an apocalyptic number.

It is an amenable number.

16905725664 is an abundant number, since it is smaller than the sum of its proper divisors (27471804456).

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

16905725664 is a wasteful number, since it uses less digits than its factorization.

16905725664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176101322 (or 176101314 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 16905725664 in words is "sixteen billion, nine hundred five million, seven hundred twenty-five thousand, six hundred sixty-four".