64616523323 has 4 divisors (see below), whose sum is σ = 70490752728. Its totient is φ = 58742293920.

The previous prime is 64616523313. The next prime is 64616523341. The reversal of 64616523323 is 32332561646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64616523323 - 2⁶ = 64616523259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64616523313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2937114686 + ... + 2937114707.

It is an arithmetic number, because the mean of its divisors is an integer number (17622688182).

Almost surely, 2^64616523323 is an apocalyptic number.

64616523323 is a deficient number, since it is larger than the sum of its proper divisors (5874229405).

64616523323 is a wasteful number, since it uses less digits than its factorization.

64616523323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874229404.

The product of its digits is 466560, while the sum is 41.

The spelling of 64616523323 in words is "sixty-four billion, six hundred sixteen million, five hundred twenty-three thousand, three hundred twenty-three".