64213294837 has 2 divisors, whose sum is σ = 64213294838. Its totient is φ = 64213294836.

The previous prime is 64213294823. The next prime is 64213294867. The reversal of 64213294837 is 73849231246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37899913041 + 26313381796 = 194679^2 + 162214^2 .

It is a cyclic number.

It is not a de Polignac number, because 64213294837 - 2³¹ = 62065811189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64213294807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32106647418 + 32106647419.

It is an arithmetic number, because the mean of its divisors is an integer number (32106647419).

Almost surely, 2^64213294837 is an apocalyptic number.

It is an amenable number.

64213294837 is a deficient number, since it is larger than the sum of its proper divisors (1).

64213294837 is an equidigital number, since it uses as much as digits as its factorization.

64213294837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 49.

The spelling of 64213294837 in words is "sixty-four billion, two hundred thirteen million, two hundred ninety-four thousand, eight hundred thirty-seven".