16668804576 has 96 divisors (see below), whose sum is σ = 46746322560. Its totient is φ = 5185230336.

The previous prime is 16668804553. The next prime is 16668804587. The reversal of 16668804576 is 67540886661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54010 + ... + 190406.

It is an arithmetic number, because the mean of its divisors is an integer number (486940860).

Almost surely, 2^16668804576 is an apocalyptic number.

16668804576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16668804576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23373161280).

16668804576 is an abundant number, since it is smaller than the sum of its proper divisors (30077517984).

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

16668804576 is a wasteful number, since it uses less digits than its factorization.

16668804576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136496 (or 136488 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 16668804576 in words is "sixteen billion, six hundred sixty-eight million, eight hundred four thousand, five hundred seventy-six".