5006661061601 has 2 divisors, whose sum is σ = 5006661061602. Its totient is φ = 5006661061600.

The previous prime is 5006661061579. The next prime is 5006661061631. The reversal of 5006661061601 is 1061601666005.

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., 4778486700625 + 228174360976 = 2185975^2 + 477676^2 .

It is a cyclic number.

It is not a de Polignac number, because 5006661061601 - 2²² = 5006656867297 is a prime.

It is not a weakly prime, because it can be changed into another prime (5006661061631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503330530800 + 2503330530801.

It is an arithmetic number, because the mean of its divisors is an integer number (2503330530801).

Almost surely, 2^{5006661061601} is an apocalyptic number.

It is an amenable number.

5006661061601 is a deficient number, since it is larger than the sum of its proper divisors (1).

5006661061601 is an equidigital number, since it uses as much as digits as its factorization.

5006661061601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 5006661061601 in words is "five trillion, six billion, six hundred sixty-one million, sixty-one thousand, six hundred one".