16128238237 has 2 divisors, whose sum is σ = 16128238238. Its totient is φ = 16128238236.

The previous prime is 16128238229. The next prime is 16128238267. The reversal of 16128238237 is 73283282161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11752944921 + 4375293316 = 108411^2 + 66146^2 .

It is a cyclic number.

It is not a de Polignac number, because 16128238237 - 2³ = 16128238229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16128238193 and 16128238202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16128238267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8064119118 + 8064119119.

It is an arithmetic number, because the mean of its divisors is an integer number (8064119119).

Almost surely, 2^16128238237 is an apocalyptic number.

It is an amenable number.

16128238237 is a deficient number, since it is larger than the sum of its proper divisors (1).

16128238237 is an equidigital number, since it uses as much as digits as its factorization.

16128238237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The spelling of 16128238237 in words is "sixteen billion, one hundred twenty-eight million, two hundred thirty-eight thousand, two hundred thirty-seven".