612948841639 has 2 divisors, whose sum is σ = 612948841640. Its totient is φ = 612948841638.

The previous prime is 612948841597. The next prime is 612948841643. The reversal of 612948841639 is 936148849216.

It is a happy number.

612948841639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612948841639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612948841679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306474420819 + 306474420820.

It is an arithmetic number, because the mean of its divisors is an integer number (306474420820).

Almost surely, 2^612948841639 is an apocalyptic number.

612948841639 is a deficient number, since it is larger than the sum of its proper divisors (1).

612948841639 is an equidigital number, since it uses as much as digits as its factorization.

612948841639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 61.

The spelling of 612948841639 in words is "six hundred twelve billion, nine hundred forty-eight million, eight hundred forty-one thousand, six hundred thirty-nine".