228662222157 has 36 divisors (see below), whose sum is σ = 343689222240. Its totient is φ = 151922957832.

The previous prime is 228662222149. The next prime is 228662222179. The reversal of 228662222157 is 751222266822.

228662222157 is a `hidden beast` number, since 2 + 2 + 8 + 6 + 622 + 2 + 2 + 15 + 7 = 666.

It is not a de Polignac number, because 228662222157 - 2³ = 228662222149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228662222057) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141235894 + ... + 141237512.

It is an arithmetic number, because the mean of its divisors is an integer number (9546922840).

Almost surely, 2^228662222157 is an apocalyptic number.

228662222157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

228662222157 is a deficient number, since it is larger than the sum of its proper divisors (115027000083).

228662222157 is an frugal number, since it uses more digits than its factorization.

228662222157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 1981 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

Adding to 228662222157 its reverse (751222266822), we get a palindrome (979884488979).

The spelling of 228662222157 in words is "two hundred twenty-eight billion, six hundred sixty-two million, two hundred twenty-two thousand, one hundred fifty-seven".