64138211 has 2 divisors, whose sum is σ = 64138212. Its totient is φ = 64138210.

The previous prime is 64138189. The next prime is 64138213. The reversal of 64138211 is 11283146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64138211 - 2⁶ = 64138147 is a prime.

It is a super-2 number, since 2×64138211² = 8227420220561042, which contains 22 as substring.

Together with 64138213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64138213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32069105 + 32069106.

It is an arithmetic number, because the mean of its divisors is an integer number (32069106).

Almost surely, 2^64138211 is an apocalyptic number.

64138211 is a deficient number, since it is larger than the sum of its proper divisors (1).

64138211 is an equidigital number, since it uses as much as digits as its factorization.

64138211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 64138211 is about 8008.6335288862. The cubic root of 64138211 is about 400.2877325586.

The spelling of 64138211 in words is "sixty-four million, one hundred thirty-eight thousand, two hundred eleven".