16521146204 has 12 divisors (see below), whose sum is σ = 28914407928. Its totient is φ = 8259886800.

The previous prime is 16521146177. The next prime is 16521146249. The reversal of 16521146204 is 40264112561.

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, 115367 + ... + 215294.

It is an arithmetic number, because the mean of its divisors is an integer number (2409533994).

Almost surely, 2^16521146204 is an apocalyptic number.

It is an amenable number.

16521146204 is a deficient number, since it is larger than the sum of its proper divisors (12393261724).

16521146204 is a wasteful number, since it uses less digits than its factorization.

16521146204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343156 (or 343154 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 16521146204 its reverse (40264112561), we get a palindrome (56785258765).

The spelling of 16521146204 in words is "sixteen billion, five hundred twenty-one million, one hundred forty-six thousand, two hundred four".