16043802856 has 8 divisors (see below), whose sum is σ = 30082130370. Its totient is φ = 8021901424.

The previous prime is 16043802847. The next prime is 16043802857. The reversal of 16043802856 is 65820834061.

It can be written as a sum of positive squares in only one way, i.e., 8999557956 + 7044244900 = 94866^2 + 83930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×16043802856² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16043802857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002737671 + ... + 1002737686.

Almost surely, 2^16043802856 is an apocalyptic number.

It is an amenable number.

16043802856 is a deficient number, since it is larger than the sum of its proper divisors (14038327514).

16043802856 is a wasteful number, since it uses less digits than its factorization.

16043802856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005475363 (or 2005475359 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 16043802856 in words is "sixteen billion, forty-three million, eight hundred two thousand, eight hundred fifty-six".