16856441379 has 12 divisors (see below), whose sum is σ = 24440775216. Its totient is φ = 11194897392.

The previous prime is 16856441353. The next prime is 16856441417. The reversal of 16856441379 is 97314465861.

16856441379 is a `hidden beast` number, since 1 + 6 + 8 + 564 + 4 + 1 + 3 + 79 = 666.

It is not a de Polignac number, because 16856441379 - 2⁵ = 16856441347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16856441279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3558352 + ... + 3563085.

It is an arithmetic number, because the mean of its divisors is an integer number (2036731268).

Almost surely, 2^16856441379 is an apocalyptic number.

16856441379 is a deficient number, since it is larger than the sum of its proper divisors (7584333837).

16856441379 is a wasteful number, since it uses less digits than its factorization.

16856441379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121706 (or 7121703 counting only the distinct ones).

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

The spelling of 16856441379 in words is "sixteen billion, eight hundred fifty-six million, four hundred forty-one thousand, three hundred seventy-nine".