64161133 has 2 divisors, whose sum is σ = 64161134. Its totient is φ = 64161132.

The previous prime is 64161131. The next prime is 64161161. The reversal of 64161133 is 33116146.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61811044 + 2350089 = 7862^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 64161133 - 2¹ = 64161131 is a prime.

Together with 64161131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 64161098 and 64161107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64161131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32080566 + 32080567.

It is an arithmetic number, because the mean of its divisors is an integer number (32080567).

Almost surely, 2^64161133 is an apocalyptic number.

It is an amenable number.

64161133 is a deficient number, since it is larger than the sum of its proper divisors (1).

64161133 is an equidigital number, since it uses as much as digits as its factorization.

64161133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 25.

The square root of 64161133 is about 8010.0644816381. The cubic root of 64161133 is about 400.3354124177.

Adding to 64161133 its reverse (33116146), we get a palindrome (97277279).

The spelling of 64161133 in words is "sixty-four million, one hundred sixty-one thousand, one hundred thirty-three".