612444506539 has 2 divisors, whose sum is σ = 612444506540. Its totient is φ = 612444506538.

The previous prime is 612444506521. The next prime is 612444506563. The reversal of 612444506539 is 935605444216.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612444506539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612444506492 and 612444506501.

It is not a weakly prime, because it can be changed into another prime (612444506339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306222253269 + 306222253270.

It is an arithmetic number, because the mean of its divisors is an integer number (306222253270).

Almost surely, 2^612444506539 is an apocalyptic number.

612444506539 is a deficient number, since it is larger than the sum of its proper divisors (1).

612444506539 is an equidigital number, since it uses as much as digits as its factorization.

612444506539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 612444506539 in words is "six hundred twelve billion, four hundred forty-four million, five hundred six thousand, five hundred thirty-nine".