16677478944 has 144 divisors (see below), whose sum is σ = 54483916032. Its totient is φ = 4740194304.

The previous prime is 16677478897. The next prime is 16677478997. The reversal of 16677478944 is 44987477661.

16677478944 is a `hidden beast` number, since 1 + 6 + 6 + 77 + 478 + 94 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367657 + ... + 410519.

It is an arithmetic number, because the mean of its divisors is an integer number (378360528).

Almost surely, 2^16677478944 is an apocalyptic number.

16677478944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16677478944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27241958016).

16677478944 is an abundant number, since it is smaller than the sum of its proper divisors (37806437088).

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

16677478944 is a wasteful number, since it uses less digits than its factorization.

16677478944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43079 (or 43068 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 16677478944 in words is "sixteen billion, six hundred seventy-seven million, four hundred seventy-eight thousand, nine hundred forty-four".