64502135321 has 8 divisors (see below), whose sum is σ = 69963579840. Its totient is φ = 59112082512.

The previous prime is 64502135287. The next prime is 64502135323. The reversal of 64502135321 is 12353120546.

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 64502135321 - 2¹⁴ = 64502118937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64502135323) 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, 17846045 + ... + 17849658.

It is an arithmetic number, because the mean of its divisors is an integer number (8745447480).

Almost surely, 2^64502135321 is an apocalyptic number.

It is an amenable number.

64502135321 is a deficient number, since it is larger than the sum of its proper divisors (5461444519).

64502135321 is a wasteful number, since it uses less digits than its factorization.

64502135321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35695855.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 64502135321 its reverse (12353120546), we get a palindrome (76855255867).

The spelling of 64502135321 in words is "sixty-four billion, five hundred two million, one hundred thirty-five thousand, three hundred twenty-one".