2471347661 has 2 divisors, whose sum is σ = 2471347662. Its totient is φ = 2471347660.

The previous prime is 2471347633. The next prime is 2471347687. The reversal of 2471347661 is 1667431742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2462045161 + 9302500 = 49619^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2471347661 - 2¹⁰ = 2471346637 is a prime.

It is a super-2 number, since 2×2471347661² = 12215118523060341842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2471341661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1235673830 + 1235673831.

It is an arithmetic number, because the mean of its divisors is an integer number (1235673831).

Almost surely, 2^2471347661 is an apocalyptic number.

It is an amenable number.

2471347661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2471347661 is an equidigital number, since it uses as much as digits as its factorization.

2471347661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 2471347661 is about 49712.6509150337. The cubic root of 2471347661 is about 1352.0039121197.

The spelling of 2471347661 in words is "two billion, four hundred seventy-one million, three hundred forty-seven thousand, six hundred sixty-one".