16008001616 has 20 divisors (see below), whose sum is σ = 31523955924. Its totient is φ = 7872787200.

The previous prime is 16008001591. The next prime is 16008001661. The reversal of 16008001616 is 61610080061.

It can be written as a sum of positive squares in 2 ways, for example, as 302899216 + 15705102400 = 17404^2 + 125320^2 .

It is a super-2 number, since 2×16008001616² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8199845 + ... + 8201796.

Almost surely, 2^16008001616 is an apocalyptic number.

16008001616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16008001616 is a deficient number, since it is larger than the sum of its proper divisors (15515954308).

16008001616 is a wasteful number, since it uses less digits than its factorization.

16008001616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16401710 (or 16401704 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 16008001616 its reverse (61610080061), we get a palindrome (77618081677).

The spelling of 16008001616 in words is "sixteen billion, eight million, one thousand, six hundred sixteen".