216136157 has 2 divisors, whose sum is σ = 216136158. Its totient is φ = 216136156.

The previous prime is 216136139. The next prime is 216136183. The reversal of 216136157 is 751631612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171767236 + 44368921 = 13106^2 + 6661^2 .

It is a cyclic number.

It is not a de Polignac number, because 216136157 - 2¹⁸ = 215874013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216136187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108068078 + 108068079.

It is an arithmetic number, because the mean of its divisors is an integer number (108068079).

Almost surely, 2^216136157 is an apocalyptic number.

It is an amenable number.

216136157 is a deficient number, since it is larger than the sum of its proper divisors (1).

216136157 is an equidigital number, since it uses as much as digits as its factorization.

216136157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 216136157 is about 14701.5698821588. The cubic root of 216136157 is about 600.1260448156.

Adding to 216136157 its reverse (751631612), we get a palindrome (967767769).

The spelling of 216136157 in words is "two hundred sixteen million, one hundred thirty-six thousand, one hundred fifty-seven".