64232513425621 has 8 divisors (see below), whose sum is σ = 67025365977024. Its totient is φ = 61439672088960.

The previous prime is 64232513425589. The next prime is 64232513425693. The reversal of 64232513425621 is 12652431523246.

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 64232513425621 - 2⁵ = 64232513425589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64232513423621) 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, 10179630 + ... + 15234496.

It is an arithmetic number, because the mean of its divisors is an integer number (8378170747128).

Almost surely, 2^{64232513425621} is an apocalyptic number.

It is an amenable number.

64232513425621 is a deficient number, since it is larger than the sum of its proper divisors (2792852551403).

64232513425621 is a wasteful number, since it uses less digits than its factorization.

64232513425621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607371.

The product of its digits is 2073600, while the sum is 46.

Adding to 64232513425621 its reverse (12652431523246), we get a palindrome (76884944948867).

The spelling of 64232513425621 in words is "sixty-four trillion, two hundred thirty-two billion, five hundred thirteen million, four hundred twenty-five thousand, six hundred twenty-one".