64663009069 has 16 divisors (see below), whose sum is σ = 65928816000. Its totient is φ = 63404228160.

The previous prime is 64663009067. The next prime is 64663009121. The reversal of 64663009069 is 96090036646.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64663009069 - 2¹ = 64663009067 is a prime.

It is a super-2 number, since 2×64663009069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64663009067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43136682 + ... + 43138180.

It is an arithmetic number, because the mean of its divisors is an integer number (4120551000).

Almost surely, 2^64663009069 is an apocalyptic number.

It is an amenable number.

64663009069 is a deficient number, since it is larger than the sum of its proper divisors (1265806931).

64663009069 is a wasteful number, since it uses less digits than its factorization.

64663009069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The spelling of 64663009069 in words is "sixty-four billion, six hundred sixty-three million, nine thousand, sixty-nine".