64335232019 has 2 divisors, whose sum is σ = 64335232020. Its totient is φ = 64335232018.

The previous prime is 64335232007. The next prime is 64335232063. The reversal of 64335232019 is 91023253346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64335232019 is a prime.

It is a super-2 number, since 2×64335232019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64335232079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32167616009 + 32167616010.

It is an arithmetic number, because the mean of its divisors is an integer number (32167616010).

Almost surely, 2^64335232019 is an apocalyptic number.

64335232019 is a deficient number, since it is larger than the sum of its proper divisors (1).

64335232019 is an equidigital number, since it uses as much as digits as its factorization.

64335232019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 64335232019 in words is "sixty-four billion, three hundred thirty-five million, two hundred thirty-two thousand, nineteen".