4129924661 has 2 divisors, whose sum is σ = 4129924662. Its totient is φ = 4129924660.

The previous prime is 4129924651. The next prime is 4129924717. The reversal of 4129924661 is 1664299214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3869586436 + 260338225 = 62206^2 + 16135^2 .

It is a cyclic number.

It is not a de Polignac number, because 4129924661 - 2¹⁸ = 4129662517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4129924651) 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, 2064962330 + 2064962331.

It is an arithmetic number, because the mean of its divisors is an integer number (2064962331).

Almost surely, 2^4129924661 is an apocalyptic number.

It is an amenable number.

4129924661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4129924661 is an equidigital number, since it uses as much as digits as its factorization.

4129924661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 4129924661 is about 64264.4898913856. The cubic root of 4129924661 is about 1604.4051341827.

The spelling of 4129924661 in words is "four billion, one hundred twenty-nine million, nine hundred twenty-four thousand, six hundred sixty-one".