47705946661 has 2 divisors, whose sum is σ = 47705946662. Its totient is φ = 47705946660.

The previous prime is 47705946599. The next prime is 47705946713. The reversal of 47705946661 is 16664950774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37759873761 + 9946072900 = 194319^2 + 99730^2 .

It is a cyclic number.

It is not a de Polignac number, because 47705946661 - 2¹⁷ = 47705815589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47705946061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23852973330 + 23852973331.

It is an arithmetic number, because the mean of its divisors is an integer number (23852973331).

Almost surely, 2^47705946661 is an apocalyptic number.

It is an amenable number.

47705946661 is a deficient number, since it is larger than the sum of its proper divisors (1).

47705946661 is an equidigital number, since it uses as much as digits as its factorization.

47705946661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 47705946661 in words is "forty-seven billion, seven hundred five million, nine hundred forty-six thousand, six hundred sixty-one".