16615066660 has 24 divisors (see below), whose sum is σ = 34963306560. Its totient is φ = 6632375904.

The previous prime is 16615066651. The next prime is 16615066687. The reversal of 16615066660 is 6666051661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843190 + ... + 862669.

It is an arithmetic number, because the mean of its divisors is an integer number (1456804440).

Almost surely, 2^16615066660 is an apocalyptic number.

16615066660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16615066660 is an abundant number, since it is smaller than the sum of its proper divisors (18348239900).

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

16615066660 is a wasteful number, since it uses less digits than its factorization.

16615066660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706355 (or 1706353 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 16615066660 in words is "sixteen billion, six hundred fifteen million, sixty-six thousand, six hundred sixty".