16606633640 has 64 divisors (see below), whose sum is σ = 37636704000. Its totient is φ = 6594444288.

The previous prime is 16606633639. The next prime is 16606633643. The reversal of 16606633640 is 4633660661.

It is not an unprimeable number, because it can be changed into a prime (16606633643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9344432 + ... + 9346208.

It is an arithmetic number, because the mean of its divisors is an integer number (588073500).

Almost surely, 2^16606633640 is an apocalyptic number.

16606633640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16606633640 is an abundant number, since it is smaller than the sum of its proper divisors (21030070360).

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

16606633640 is a wasteful number, since it uses less digits than its factorization.

16606633640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 16606633640 in words is "sixteen billion, six hundred six million, six hundred thirty-three thousand, six hundred forty".