64104431131087 has 2 divisors, whose sum is σ = 64104431131088. Its totient is φ = 64104431131086.

The previous prime is 64104431131057. The next prime is 64104431131151. The reversal of 64104431131087 is 78013113440146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64104431131087 is a prime.

It is a super-2 number, since 2×64104431131087² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64104431131057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32052215565543 + 32052215565544.

It is an arithmetic number, because the mean of its divisors is an integer number (32052215565544).

Almost surely, 2^{64104431131087} is an apocalyptic number.

64104431131087 is a deficient number, since it is larger than the sum of its proper divisors (1).

64104431131087 is an equidigital number, since it uses as much as digits as its factorization.

64104431131087 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 64104431131087 in words is "sixty-four trillion, one hundred four billion, four hundred thirty-one million, one hundred thirty-one thousand, eighty-seven".