16001000004 has 48 divisors (see below), whose sum is σ = 40892173056. Its totient is φ = 4829460000.

The previous prime is 16001000003. The next prime is 16001000027. The reversal of 16001000004 is 40000010061.

It is a super-2 number, since 2×16001000004² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (16001000003) by changing a digit.

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, 208342 + ... + 274605.

It is an arithmetic number, because the mean of its divisors is an integer number (851920272).

Almost surely, 2^16001000004 is an apocalyptic number.

It is an amenable number.

16001000004 is an abundant number, since it is smaller than the sum of its proper divisors (24891173052).

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

16001000004 is a wasteful number, since it uses less digits than its factorization.

16001000004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483216 (or 483214 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 16001000004 its reverse (40000010061), we get a palindrome (56001010065).

The spelling of 16001000004 in words is "sixteen billion, one million, four", and thus it is an aban number.