16721155214 has 16 divisors (see below), whose sum is σ = 25747182720. Its totient is φ = 8139613440.

The previous prime is 16721155207. The next prime is 16721155301. The reversal of 16721155214 is 41255112761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173579 + ... + 252134.

It is an arithmetic number, because the mean of its divisors is an integer number (1609198920).

Almost surely, 2^16721155214 is an apocalyptic number.

16721155214 is a deficient number, since it is larger than the sum of its proper divisors (9026027506).

16721155214 is a wasteful number, since it uses less digits than its factorization.

16721155214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426235.

The product of its digits is 16800, while the sum is 35.

Adding to 16721155214 its reverse (41255112761), we get a palindrome (57976267975).

The spelling of 16721155214 in words is "sixteen billion, seven hundred twenty-one million, one hundred fifty-five thousand, two hundred fourteen".