228699071987 has 2 divisors, whose sum is σ = 228699071988. Its totient is φ = 228699071986.

The previous prime is 228699071983. The next prime is 228699072023. The reversal of 228699071987 is 789170996822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228699071987 - 2² = 228699071983 is a prime.

It is not a weakly prime, because it can be changed into another prime (228699071983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114349535993 + 114349535994.

It is an arithmetic number, because the mean of its divisors is an integer number (114349535994).

Almost surely, 2^228699071987 is an apocalyptic number.

228699071987 is a deficient number, since it is larger than the sum of its proper divisors (1).

228699071987 is an equidigital number, since it uses as much as digits as its factorization.

228699071987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54867456, while the sum is 68.

The spelling of 228699071987 in words is "two hundred twenty-eight billion, six hundred ninety-nine million, seventy-one thousand, nine hundred eighty-seven".