12816064654 has 4 divisors (see below), whose sum is σ = 19224096984. Its totient is φ = 6408032326.

The previous prime is 12816064643. The next prime is 12816064687. The reversal of 12816064654 is 45646061821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12816064654.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204016162 + ... + 3204016165.

It is an arithmetic number, because the mean of its divisors is an integer number (4806024246).

Almost surely, 2^12816064654 is an apocalyptic number.

12816064654 is a deficient number, since it is larger than the sum of its proper divisors (6408032330).

12816064654 is an equidigital number, since it uses as much as digits as its factorization.

12816064654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408032329.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 12816064654 in words is "twelve billion, eight hundred sixteen million, sixty-four thousand, six hundred fifty-four".