64653556323 has 8 divisors (see below), whose sum is σ = 86242444288. Its totient is φ = 43083519624.

The previous prime is 64653556271. The next prime is 64653556381. The reversal of 64653556323 is 32365535646.

It is a happy number.

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

It is not a de Polignac number, because 64653556323 - 2¹⁰ = 64653555299 is a prime.

It is a super-2 number, since 2×64653556323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64653556423) 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, 4704811 + ... + 4718532.

It is an arithmetic number, because the mean of its divisors is an integer number (10780305536).

Almost surely, 2^64653556323 is an apocalyptic number.

64653556323 is a deficient number, since it is larger than the sum of its proper divisors (21588887965).

64653556323 is a wasteful number, since it uses less digits than its factorization.

64653556323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9425633.

The product of its digits is 5832000, while the sum is 48.

The spelling of 64653556323 in words is "sixty-four billion, six hundred fifty-three million, five hundred fifty-six thousand, three hundred twenty-three".