64224663509 has 8 divisors (see below), whose sum is σ = 66308040960. Its totient is φ = 62142012000.

The previous prime is 64224663497. The next prime is 64224663527. The reversal of 64224663509 is 90536642246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64224663509 - 2¹² = 64224659413 is a prime.

It is a super-4 number, since 4×64224663509⁴ (a number of 44 digits) contains 4444 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 (64224660509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1262 + ... + 358400.

It is an arithmetic number, because the mean of its divisors is an integer number (8288505120).

Almost surely, 2^64224663509 is an apocalyptic number.

It is an amenable number.

64224663509 is a deficient number, since it is larger than the sum of its proper divisors (2083377451).

64224663509 is a wasteful number, since it uses less digits than its factorization.

64224663509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362971.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 64224663509 in words is "sixty-four billion, two hundred twenty-four million, six hundred sixty-three thousand, five hundred nine".