16610983988 has 24 divisors (see below), whose sum is σ = 29371575240. Its totient is φ = 8219187200.

The previous prime is 16610983943. The next prime is 16610984009. The reversal of 16610983988 is 88938901661.

It can be written as a sum of positive squares in 4 ways, for example, as 13879667344 + 2731316644 = 117812^2 + 52262^2 .

It is a congruent number.

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, 909248 + ... + 927336.

It is an arithmetic number, because the mean of its divisors is an integer number (1223815635).

Almost surely, 2^16610983988 is an apocalyptic number.

It is an amenable number.

16610983988 is a deficient number, since it is larger than the sum of its proper divisors (12760591252).

16610983988 is a wasteful number, since it uses less digits than its factorization.

16610983988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20467 (or 20465 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 59.

The spelling of 16610983988 in words is "sixteen billion, six hundred ten million, nine hundred eighty-three thousand, nine hundred eighty-eight".