64684646229 has 24 divisors (see below), whose sum is σ = 104689264320. Its totient is φ = 35355581184.

The previous prime is 64684646209. The next prime is 64684646233. The reversal of 64684646229 is 92264648646.

It is not a de Polignac number, because 64684646229 - 2¹¹ = 64684644181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64684646209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9562524 + ... + 9569285.

It is an arithmetic number, because the mean of its divisors is an integer number (4362052680).

Almost surely, 2^64684646229 is an apocalyptic number.

64684646229 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64684646229 is a deficient number, since it is larger than the sum of its proper divisors (40004618091).

64684646229 is a wasteful number, since it uses less digits than its factorization.

64684646229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19131849 (or 19131842 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 57.

The spelling of 64684646229 in words is "sixty-four billion, six hundred eighty-four million, six hundred forty-six thousand, two hundred twenty-nine".