8563557479 has 2 divisors, whose sum is σ = 8563557480. Its totient is φ = 8563557478.

The previous prime is 8563557473. The next prime is 8563557481. The reversal of 8563557479 is 9747553658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8563557479 - 2¹⁶ = 8563491943 is a prime.

It is a super-2 number, since 2×8563557479² (a number of 21 digits) contains 22 as substring.

Together with 8563557481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8563557473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4281778739 + 4281778740.

It is an arithmetic number, because the mean of its divisors is an integer number (4281778740).

Almost surely, 2^8563557479 is an apocalyptic number.

8563557479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8563557479 is an equidigital number, since it uses as much as digits as its factorization.

8563557479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752000, while the sum is 59.

The square root of 8563557479 is about 92539.4914563507. The cubic root of 8563557479 is about 2045.9015860647.

The spelling of 8563557479 in words is "eight billion, five hundred sixty-three million, five hundred fifty-seven thousand, four hundred seventy-nine".