612046402661 has 2 divisors, whose sum is σ = 612046402662. Its totient is φ = 612046402660.

The previous prime is 612046402601. The next prime is 612046402687. The reversal of 612046402661 is 166204640216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 542181868900 + 69864533761 = 736330^2 + 264319^2 .

It is a cyclic number.

It is not a de Polignac number, because 612046402661 - 2²² = 612042208357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612046402601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306023201330 + 306023201331.

It is an arithmetic number, because the mean of its divisors is an integer number (306023201331).

Almost surely, 2^612046402661 is an apocalyptic number.

It is an amenable number.

612046402661 is a deficient number, since it is larger than the sum of its proper divisors (1).

612046402661 is an equidigital number, since it uses as much as digits as its factorization.

612046402661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 612046402661 in words is "six hundred twelve billion, forty-six million, four hundred two thousand, six hundred sixty-one".