64534215636430 has 16 divisors (see below), whose sum is σ = 116219756227680. Its totient is φ = 25800760014112.

The previous prime is 64534215636391. The next prime is 64534215636439. The reversal of 64534215636430 is 3463651243546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64534215636439) 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 7 ways as a sum of consecutive naturals, for example, 1615759090 + ... + 1615799029.

It is an arithmetic number, because the mean of its divisors is an integer number (7263734764230).

Almost surely, 2^{64534215636430} is an apocalyptic number.

64534215636430 is a deficient number, since it is larger than the sum of its proper divisors (51685540591250).

64534215636430 is a wasteful number, since it uses less digits than its factorization.

64534215636430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231560123.

The product of its (nonzero) digits is 18662400, while the sum is 52.

Adding to 64534215636430 its reverse (3463651243546), we get a palindrome (67997866879976).

The spelling of 64534215636430 in words is "sixty-four trillion, five hundred thirty-four billion, two hundred fifteen million, six hundred thirty-six thousand, four hundred thirty".