612618538106461 has 2 divisors, whose sum is σ = 612618538106462. Its totient is φ = 612618538106460.

The previous prime is 612618538106453. The next prime is 612618538106537. The reversal of 612618538106461 is 164601835816216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381495508248100 + 231123029858361 = 19531910^2 + 15202731^2 .

It is a cyclic number.

It is not a de Polignac number, because 612618538106461 - 2³ = 612618538106453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 612618538106396 and 612618538106405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612618538106441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306309269053230 + 306309269053231.

It is an arithmetic number, because the mean of its divisors is an integer number (306309269053231).

Almost surely, 2^{612618538106461} is an apocalyptic number.

It is an amenable number.

612618538106461 is a deficient number, since it is larger than the sum of its proper divisors (1).

612618538106461 is an equidigital number, since it uses as much as digits as its factorization.

612618538106461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 612618538106461 in words is "six hundred twelve trillion, six hundred eighteen billion, five hundred thirty-eight million, one hundred six thousand, four hundred sixty-one".