16665976660 has 24 divisors (see below), whose sum is σ = 35010946656. Its totient is φ = 6664029600.

The previous prime is 16665976651. The next prime is 16665976667. The reversal of 16665976660 is 6667956661.

It is a junction number, because it is equal to n+sod(n) for n = 16665976595 and 16665976604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16665976667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89122 + ... + 203161.

It is an arithmetic number, because the mean of its divisors is an integer number (1458789444).

Almost surely, 2^16665976660 is an apocalyptic number.

16665976660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16665976660 is an abundant number, since it is smaller than the sum of its proper divisors (18344969996).

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

16665976660 is a wasteful number, since it uses less digits than its factorization.

16665976660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295143 (or 295141 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 58.

The spelling of 16665976660 in words is "sixteen billion, six hundred sixty-five million, nine hundred seventy-six thousand, six hundred sixty".