64853623534827 has 4 divisors (see below), whose sum is σ = 86471498046440. Its totient is φ = 43235749023216.

The previous prime is 64853623534823. The next prime is 64853623534907. The reversal of 64853623534827 is 72843532635846.

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

It is not a de Polignac number, because 64853623534827 - 2² = 64853623534823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64853623534823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10808937255802 + ... + 10808937255807.

It is an arithmetic number, because the mean of its divisors is an integer number (21617874511610).

Almost surely, 2^{64853623534827} is an apocalyptic number.

64853623534827 is a deficient number, since it is larger than the sum of its proper divisors (21617874511613).

64853623534827 is a wasteful number, since it uses less digits than its factorization.

64853623534827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21617874511612.

The product of its digits is 696729600, while the sum is 66.

The spelling of 64853623534827 in words is "sixty-four trillion, eight hundred fifty-three billion, six hundred twenty-three million, five hundred thirty-four thousand, eight hundred twenty-seven".