229542421687 has 2 divisors, whose sum is σ = 229542421688. Its totient is φ = 229542421686.

The previous prime is 229542421649. The next prime is 229542421699. The reversal of 229542421687 is 786124245922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229542421687 - 2¹⁹ = 229541897399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229542421487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114771210843 + 114771210844.

It is an arithmetic number, because the mean of its divisors is an integer number (114771210844).

Almost surely, 2^229542421687 is an apocalyptic number.

229542421687 is a deficient number, since it is larger than the sum of its proper divisors (1).

229542421687 is an equidigital number, since it uses as much as digits as its factorization.

229542421687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 52.

The spelling of 229542421687 in words is "two hundred twenty-nine billion, five hundred forty-two million, four hundred twenty-one thousand, six hundred eighty-seven".