5001656641 has 2 divisors, whose sum is σ = 5001656642. Its totient is φ = 5001656640.

The previous prime is 5001656573. The next prime is 5001656657. The reversal of 5001656641 is 1466561005.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3853802241 + 1147854400 = 62079^2 + 33880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5001656641 - 2¹⁷ = 5001525569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5001656597 and 5001656606.

It is not a weakly prime, because it can be changed into another prime (5001606641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500828320 + 2500828321.

It is an arithmetic number, because the mean of its divisors is an integer number (2500828321).

Almost surely, 2^5001656641 is an apocalyptic number.

It is an amenable number.

5001656641 is a deficient number, since it is larger than the sum of its proper divisors (1).

5001656641 is an equidigital number, since it uses as much as digits as its factorization.

5001656641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 5001656641 is about 70722.3913693535. The cubic root of 5001656641 is about 1710.1647802404.

The spelling of 5001656641 in words is "five billion, one million, six hundred fifty-six thousand, six hundred forty-one".