16616661136 has 20 divisors (see below), whose sum is σ = 32196804352. Its totient is φ = 8307808416.

The previous prime is 16616661091. The next prime is 16616661161. The reversal of 16616661136 is 63116661661.

It is a super-2 number, since 2×16616661136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16616661092 and 16616661101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420901 + ... + 458683.

Almost surely, 2^16616661136 is an apocalyptic number.

16616661136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16616661136 is a deficient number, since it is larger than the sum of its proper divisors (15580143216).

16616661136 is a wasteful number, since it uses less digits than its factorization.

16616661136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65278 (or 65272 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The spelling of 16616661136 in words is "sixteen billion, six hundred sixteen million, six hundred sixty-one thousand, one hundred thirty-six".