16860663456 has 96 divisors (see below), whose sum is σ = 54472940928. Its totient is φ = 4446766080.

The previous prime is 16860663437. The next prime is 16860663499. The reversal of 16860663456 is 65436606861.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 16860663399 and 16860663408.

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 15 ways as a sum of consecutive naturals, for example, 956275 + ... + 973746.

It is an arithmetic number, because the mean of its divisors is an integer number (567426468).

Almost surely, 2^16860663456 is an apocalyptic number.

16860663456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16860663456 is an abundant number, since it is smaller than the sum of its proper divisors (37612277472).

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

16860663456 is a wasteful number, since it uses less digits than its factorization.

16860663456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930054 (or 1930046 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 16860663456 in words is "sixteen billion, eight hundred sixty million, six hundred sixty-three thousand, four hundred fifty-six".