228537718499 has 2 divisors, whose sum is σ = 228537718500. Its totient is φ = 228537718498.

The previous prime is 228537718483. The next prime is 228537718517. The reversal of 228537718499 is 994817735822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228537718499 - 2⁴ = 228537718483 is a prime.

It is not a weakly prime, because it can be changed into another prime (228537718399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114268859249 + 114268859250.

It is an arithmetic number, because the mean of its divisors is an integer number (114268859250).

Almost surely, 2^228537718499 is an apocalyptic number.

228537718499 is a deficient number, since it is larger than the sum of its proper divisors (1).

228537718499 is an equidigital number, since it uses as much as digits as its factorization.

228537718499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 65.

The spelling of 228537718499 in words is "two hundred twenty-eight billion, five hundred thirty-seven million, seven hundred eighteen thousand, four hundred ninety-nine".