5987777881 has 2 divisors, whose sum is σ = 5987777882. Its totient is φ = 5987777880.

The previous prime is 5987777869. The next prime is 5987777923. The reversal of 5987777881 is 1887777895.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5688176400 + 299601481 = 75420^2 + 17309^2 .

It is a cyclic number.

It is not a de Polignac number, because 5987777881 - 2²⁹ = 5450906969 is a prime.

It is a super-2 number, since 2×5987777881² = 71706967904385700322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5987777981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2993888940 + 2993888941.

It is an arithmetic number, because the mean of its divisors is an integer number (2993888941).

Almost surely, 2^5987777881 is an apocalyptic number.

It is an amenable number.

5987777881 is a deficient number, since it is larger than the sum of its proper divisors (1).

5987777881 is an equidigital number, since it uses as much as digits as its factorization.

5987777881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55319040, while the sum is 67.

The square root of 5987777881 is about 77380.7332673967. The cubic root of 5987777881 is about 1815.8859172036.

The spelling of 5987777881 in words is "five billion, nine hundred eighty-seven million, seven hundred seventy-seven thousand, eight hundred eighty-one".