3216404045 has 8 divisors (see below), whose sum is σ = 3871862424. Its totient is φ = 2565004864.

The previous prime is 3216404041. The next prime is 3216404047. The reversal of 3216404045 is 5404046123.

It can be written as a sum of positive squares in 4 ways, for example, as 245172964 + 2971231081 = 15658^2 + 54509^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3216404045 - 2² = 3216404041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3216403999 and 3216404017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216404041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013054 + ... + 1016223.

It is an arithmetic number, because the mean of its divisors is an integer number (483982803).

Almost surely, 2^3216404045 is an apocalyptic number.

It is an amenable number.

3216404045 is a deficient number, since it is larger than the sum of its proper divisors (655458379).

3216404045 is a wasteful number, since it uses less digits than its factorization.

3216404045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029599.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 3216404045 is about 56713.3497952643. The cubic root of 3216404045 is about 1476.1263513883.

The spelling of 3216404045 in words is "three billion, two hundred sixteen million, four hundred four thousand, forty-five".