16605025456 has 20 divisors (see below), whose sum is σ = 32385302704. Its totient is φ = 8247528000.

The previous prime is 16605025397. The next prime is 16605025487. The reversal of 16605025456 is 65452050661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434055 + ... + 3438886.

Almost surely, 2^16605025456 is an apocalyptic number.

16605025456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16605025456 is a deficient number, since it is larger than the sum of its proper divisors (15780277248).

16605025456 is a wasteful number, since it uses less digits than its factorization.

16605025456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6873100 (or 6873094 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 16605025456 in words is "sixteen billion, six hundred five million, twenty-five thousand, four hundred fifty-six".