64065310620621 has 8 divisors (see below), whose sum is σ = 85475205965760. Its totient is φ = 42682811177952.

The previous prime is 64065310620617. The next prime is 64065310620679. The reversal of 64065310620621 is 12602601356046.

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

It is not a de Polignac number, because 64065310620621 - 2² = 64065310620617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64065310620121) 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, 6848970160 + ... + 6848979513.

It is an arithmetic number, because the mean of its divisors is an integer number (10684400745720).

Almost surely, 2^{64065310620621} is an apocalyptic number.

It is an amenable number.

64065310620621 is a deficient number, since it is larger than the sum of its proper divisors (21409895345139).

64065310620621 is a wasteful number, since it uses less digits than its factorization.

64065310620621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13697951235.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 64065310620621 its reverse (12602601356046), we get a palindrome (76667911976667).

The spelling of 64065310620621 in words is "sixty-four trillion, sixty-five billion, three hundred ten million, six hundred twenty thousand, six hundred twenty-one".