16786654920 has 128 divisors (see below), whose sum is σ = 63949190400. Its totient is φ = 3836947968.

The previous prime is 16786654883. The next prime is 16786654943. The reversal of 16786654920 is 2945668761.

16786654920 is a `hidden beast` number, since 1 + 6 + 78 + 6 + 6 + 549 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102669 + ... + 1117788.

It is an arithmetic number, because the mean of its divisors is an integer number (499603050).

Almost surely, 2^16786654920 is an apocalyptic number.

16786654920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16786654920 is an abundant number, since it is smaller than the sum of its proper divisors (47162535480).

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

16786654920 is a wasteful number, since it uses less digits than its factorization.

16786654920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220484 (or 2220474 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 16786654920 in words is "sixteen billion, seven hundred eighty-six million, six hundred fifty-four thousand, nine hundred twenty".