228918330551 has 2 divisors, whose sum is σ = 228918330552. Its totient is φ = 228918330550.

The previous prime is 228918330547. The next prime is 228918330643. The reversal of 228918330551 is 155033819822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228918330551 - 2² = 228918330547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228918330496 and 228918330505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228918330521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114459165275 + 114459165276.

It is an arithmetic number, because the mean of its divisors is an integer number (114459165276).

Almost surely, 2^228918330551 is an apocalyptic number.

228918330551 is a deficient number, since it is larger than the sum of its proper divisors (1).

228918330551 is an equidigital number, since it uses as much as digits as its factorization.

228918330551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 228918330551 in words is "two hundred twenty-eight billion, nine hundred eighteen million, three hundred thirty thousand, five hundred fifty-one".