5667778871 has 2 divisors, whose sum is σ = 5667778872. Its totient is φ = 5667778870.

The previous prime is 5667778867. The next prime is 5667778957. The reversal of 5667778871 is 1788777665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5667778871 - 2² = 5667778867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5667778811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833889435 + 2833889436.

It is an arithmetic number, because the mean of its divisors is an integer number (2833889436).

Almost surely, 2^5667778871 is an apocalyptic number.

5667778871 is a deficient number, since it is larger than the sum of its proper divisors (1).

5667778871 is an equidigital number, since it uses as much as digits as its factorization.

5667778871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27659520, while the sum is 62.

The square root of 5667778871 is about 75284.6522938109. The cubic root of 5667778871 is about 1782.9437120773.

The spelling of 5667778871 in words is "five billion, six hundred sixty-seven million, seven hundred seventy-eight thousand, eight hundred seventy-one".