16721226104 has 16 divisors (see below), whose sum is σ = 34202508120. Its totient is φ = 7600557280.

The previous prime is 16721226101. The next prime is 16721226131. The reversal of 16721226104 is 40162212761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16721226101) 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, 95006879 + ... + 95007054.

Almost surely, 2^16721226104 is an apocalyptic number.

It is an amenable number.

16721226104 is an abundant number, since it is smaller than the sum of its proper divisors (17481282016).

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

16721226104 is a wasteful number, since it uses less digits than its factorization.

16721226104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190013950 (or 190013946 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

Adding to 16721226104 its reverse (40162212761), we get a palindrome (56883438865).

The spelling of 16721226104 in words is "sixteen billion, seven hundred twenty-one million, two hundred twenty-six thousand, one hundred four".