16721315102 has 4 divisors (see below), whose sum is σ = 25081972656. Its totient is φ = 8360657550.

The previous prime is 16721315081. The next prime is 16721315147. The reversal of 16721315102 is 20151312761.

16721315102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180328774 + ... + 4180328777.

It is an arithmetic number, because the mean of its divisors is an integer number (6270493164).

Almost surely, 2^16721315102 is an apocalyptic number.

16721315102 is a deficient number, since it is larger than the sum of its proper divisors (8360657554).

16721315102 is an equidigital number, since it uses as much as digits as its factorization.

16721315102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8360657553.

The product of its (nonzero) digits is 2520, while the sum is 29.

Adding to 16721315102 its reverse (20151312761), we get a palindrome (36872627863).

The spelling of 16721315102 in words is "sixteen billion, seven hundred twenty-one million, three hundred fifteen thousand, one hundred two".