616722783893 has 4 divisors (see below), whose sum is σ = 616813605408. Its totient is φ = 616631962380.

The previous prime is 616722783869. The next prime is 616722783977. The reversal of 616722783893 is 398387227616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616722783893 - 2¹² = 616722779797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616722783493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45400571 + ... + 45414152.

It is an arithmetic number, because the mean of its divisors is an integer number (154203401352).

Almost surely, 2^616722783893 is an apocalyptic number.

It is an amenable number.

616722783893 is a deficient number, since it is larger than the sum of its proper divisors (90821515).

616722783893 is an equidigital number, since it uses as much as digits as its factorization.

616722783893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90821514.

The product of its digits is 36578304, while the sum is 62.

The spelling of 616722783893 in words is "six hundred sixteen billion, seven hundred twenty-two million, seven hundred eighty-three thousand, eight hundred ninety-three".