612623331653 has 2 divisors, whose sum is σ = 612623331654. Its totient is φ = 612623331652.

The previous prime is 612623331631. The next prime is 612623331689. The reversal of 612623331653 is 356133326216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459849446884 + 152773884769 = 678122^2 + 390863^2 .

It is a cyclic number.

It is not a de Polignac number, because 612623331653 - 2²² = 612619137349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612623331653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612623331613) 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, 306311665826 + 306311665827.

It is an arithmetic number, because the mean of its divisors is an integer number (306311665827).

Almost surely, 2^612623331653 is an apocalyptic number.

It is an amenable number.

612623331653 is a deficient number, since it is larger than the sum of its proper divisors (1).

612623331653 is an equidigital number, since it uses as much as digits as its factorization.

612623331653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 41.

Adding to 612623331653 its reverse (356133326216), we get a palindrome (968756657869).

The spelling of 612623331653 in words is "six hundred twelve billion, six hundred twenty-three million, three hundred thirty-one thousand, six hundred fifty-three".