1610811623461 has 2 divisors, whose sum is σ = 1610811623462. Its totient is φ = 1610811623460.

The previous prime is 1610811623381. The next prime is 1610811623479. The reversal of 1610811623461 is 1643261180161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1575765537025 + 35046086436 = 1255295^2 + 187206^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610811623461 - 2²⁵ = 1610778069029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1610811627461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805405811730 + 805405811731.

It is an arithmetic number, because the mean of its divisors is an integer number (805405811731).

Almost surely, 2^{1610811623461} is an apocalyptic number.

It is an amenable number.

1610811623461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610811623461 is an equidigital number, since it uses as much as digits as its factorization.

1610811623461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 1610811623461 in words is "one trillion, six hundred ten billion, eight hundred eleven million, six hundred twenty-three thousand, four hundred sixty-one".