3216623742919 has 2 divisors, whose sum is σ = 3216623742920. Its totient is φ = 3216623742918.

The previous prime is 3216623742877. The next prime is 3216623742977. The reversal of 3216623742919 is 9192473266123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3216623742919 - 2⁷ = 3216623742791 is a prime.

It is a super-2 number, since 2×3216623742919² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3216623742919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3216623742989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608311871459 + 1608311871460.

It is an arithmetic number, because the mean of its divisors is an integer number (1608311871460).

Almost surely, 2^{3216623742919} is an apocalyptic number.

3216623742919 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216623742919 is an equidigital number, since it uses as much as digits as its factorization.

3216623742919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 55.

The spelling of 3216623742919 in words is "three trillion, two hundred sixteen billion, six hundred twenty-three million, seven hundred forty-two thousand, nine hundred nineteen".