16660917936 has 120 divisors (see below), whose sum is σ = 50921803296. Its totient is φ = 5054192640.

The previous prime is 16660917929. The next prime is 16660917947. The reversal of 16660917936 is 63971906661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70236 + ... + 195588.

Almost surely, 2^16660917936 is an apocalyptic number.

16660917936 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 16660917936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25460901648).

16660917936 is an abundant number, since it is smaller than the sum of its proper divisors (34260885360).

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

16660917936 is a wasteful number, since it uses less digits than its factorization.

16660917936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125451 (or 125442 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The spelling of 16660917936 in words is "sixteen billion, six hundred sixty million, nine hundred seventeen thousand, nine hundred thirty-six".