47564446577 has 2 divisors, whose sum is σ = 47564446578. Its totient is φ = 47564446576.

The previous prime is 47564446519. The next prime is 47564446583. The reversal of 47564446577 is 77564446574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29887148641 + 17677297936 = 172879^2 + 132956^2 .

It is a cyclic number.

It is not a de Polignac number, because 47564446577 - 2⁶ = 47564446513 is a prime.

It is not a weakly prime, because it can be changed into another prime (47564446777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23782223288 + 23782223289.

It is an arithmetic number, because the mean of its divisors is an integer number (23782223289).

Almost surely, 2^47564446577 is an apocalyptic number.

It is an amenable number.

47564446577 is a deficient number, since it is larger than the sum of its proper divisors (1).

47564446577 is an equidigital number, since it uses as much as digits as its factorization.

47564446577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79027200, while the sum is 59.

The spelling of 47564446577 in words is "forty-seven billion, five hundred sixty-four million, four hundred forty-six thousand, five hundred seventy-seven".