228578673511 has 2 divisors, whose sum is σ = 228578673512. Its totient is φ = 228578673510.

The previous prime is 228578673497. The next prime is 228578673563. The reversal of 228578673511 is 115376875822.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228578673511 - 2¹⁵ = 228578640743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228578673311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114289336755 + 114289336756.

It is an arithmetic number, because the mean of its divisors is an integer number (114289336756).

Almost surely, 2^228578673511 is an apocalyptic number.

228578673511 is a deficient number, since it is larger than the sum of its proper divisors (1).

228578673511 is an equidigital number, since it uses as much as digits as its factorization.

228578673511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 55.

The spelling of 228578673511 in words is "two hundred twenty-eight billion, five hundred seventy-eight million, six hundred seventy-three thousand, five hundred eleven".