5260633661 has 2 divisors, whose sum is σ = 5260633662. Its totient is φ = 5260633660.

The previous prime is 5260633649. The next prime is 5260633709. The reversal of 5260633661 is 1663360625.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5260600900 + 32761 = 72530^2 + 181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5260633661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5260632661) 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, 2630316830 + 2630316831.

It is an arithmetic number, because the mean of its divisors is an integer number (2630316831).

Almost surely, 2^5260633661 is an apocalyptic number.

It is an amenable number.

5260633661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5260633661 is an equidigital number, since it uses as much as digits as its factorization.

5260633661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 5260633661 is about 72530.2258441265. The cubic root of 5260633661 is about 1739.1859561386.

The spelling of 5260633661 in words is "five billion, two hundred sixty million, six hundred thirty-three thousand, six hundred sixty-one".