47858549777 has 2 divisors, whose sum is σ = 47858549778. Its totient is φ = 47858549776.

The previous prime is 47858549759. The next prime is 47858549789. The reversal of 47858549777 is 77794585874.

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., 39562801216 + 8295748561 = 198904^2 + 91081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47858549777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47858549777.

It is not a weakly prime, because it can be changed into another prime (47858539777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23929274888 + 23929274889.

It is an arithmetic number, because the mean of its divisors is an integer number (23929274889).

Almost surely, 2^47858549777 is an apocalyptic number.

It is an amenable number.

47858549777 is a deficient number, since it is larger than the sum of its proper divisors (1).

47858549777 is an equidigital number, since it uses as much as digits as its factorization.

47858549777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 553190400, while the sum is 71.

The spelling of 47858549777 in words is "forty-seven billion, eight hundred fifty-eight million, five hundred forty-nine thousand, seven hundred seventy-seven".