3216406501979 has 4 divisors (see below), whose sum is σ = 3508807093080. Its totient is φ = 2924005910880.

The previous prime is 3216406501967. The next prime is 3216406501999. The reversal of 3216406501979 is 9791056046123.

3216406501979 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 cyclic number.

It is not a de Polignac number, because 3216406501979 - 2¹⁶ = 3216406436443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3216406501979.

It is not an unprimeable number, because it can be changed into a prime (3216406501999) 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, 146200295534 + ... + 146200295555.

It is an arithmetic number, because the mean of its divisors is an integer number (877201773270).

Almost surely, 2^{3216406501979} is an apocalyptic number.

3216406501979 is a deficient number, since it is larger than the sum of its proper divisors (292400591101).

3216406501979 is a wasteful number, since it uses less digits than its factorization.

3216406501979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292400591100.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 3216406501979 in words is "three trillion, two hundred sixteen billion, four hundred six million, five hundred one thousand, nine hundred seventy-nine".