8557842977 has 2 divisors, whose sum is σ = 8557842978. Its totient is φ = 8557842976.

The previous prime is 8557842973. The next prime is 8557843031. The reversal of 8557842977 is 7792487558.

8557842977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5191058401 + 3366784576 = 72049^2 + 58024^2 .

It is a cyclic number.

It is not a de Polignac number, because 8557842977 - 2² = 8557842973 is a prime.

It is not a weakly prime, because it can be changed into another prime (8557842973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4278921488 + 4278921489.

It is an arithmetic number, because the mean of its divisors is an integer number (4278921489).

Almost surely, 2^8557842977 is an apocalyptic number.

It is an amenable number.

8557842977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8557842977 is an equidigital number, since it uses as much as digits as its factorization.

8557842977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39513600, while the sum is 62.

The square root of 8557842977 is about 92508.6102857458. The cubic root of 8557842977 is about 2045.4464048991.

The spelling of 8557842977 in words is "eight billion, five hundred fifty-seven million, eight hundred forty-two thousand, nine hundred seventy-seven".