2151216016 has 20 divisors (see below), whose sum is σ = 4178875392. Its totient is φ = 1072796576.

The previous prime is 2151215987. The next prime is 2151216017. The reversal of 2151216016 is 6106121512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2151216017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169396 + ... + 181651.

Almost surely, 2^2151216016 is an apocalyptic number.

It is an amenable number.

2151216016 is a deficient number, since it is larger than the sum of its proper divisors (2027659376).

2151216016 is a wasteful number, since it uses less digits than its factorization.

2151216016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351438 (or 351432 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2151216016 is about 46381.2032616663. The cubic root of 2151216016 is about 1290.9061629865.

Adding to 2151216016 its reverse (6106121512), we get a palindrome (8257337528).

The spelling of 2151216016 in words is "two billion, one hundred fifty-one million, two hundred sixteen thousand, sixteen".