616431631373 has 2 divisors, whose sum is σ = 616431631374. Its totient is φ = 616431631372.

The previous prime is 616431631369. The next prime is 616431631391. The reversal of 616431631373 is 373136134616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608927394244 + 7504237129 = 780338^2 + 86627^2 .

It is a cyclic number.

It is not a de Polignac number, because 616431631373 - 2² = 616431631369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616431631393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308215815686 + 308215815687.

It is an arithmetic number, because the mean of its divisors is an integer number (308215815687).

Almost surely, 2^616431631373 is an apocalyptic number.

It is an amenable number.

616431631373 is a deficient number, since it is larger than the sum of its proper divisors (1).

616431631373 is an equidigital number, since it uses as much as digits as its factorization.

616431631373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 44.

Adding to 616431631373 its reverse (373136134616), we get a palindrome (989567765989).

The spelling of 616431631373 in words is "six hundred sixteen billion, four hundred thirty-one million, six hundred thirty-one thousand, three hundred seventy-three".