16606521836 has 24 divisors (see below), whose sum is σ = 30075276000. Its totient is φ = 8013809664.

The previous prime is 16606521821. The next prime is 16606521851. The reversal of 16606521836 is 63812560661.

It is an interprime number because it is at equal distance from previous prime (16606521821) and next prime (16606521851).

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, 285305 + ... + 338543.

It is an arithmetic number, because the mean of its divisors is an integer number (1253136500).

Almost surely, 2^16606521836 is an apocalyptic number.

It is an amenable number.

16606521836 is a deficient number, since it is larger than the sum of its proper divisors (13468754164).

16606521836 is a wasteful number, since it uses less digits than its factorization.

16606521836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55961 (or 55959 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 16606521836 in words is "sixteen billion, six hundred six million, five hundred twenty-one thousand, eight hundred thirty-six".