64796237251321 has 3 divisors (see below), whose sum is σ = 64796245300933. Its totient is φ = 64796229201710.

The previous prime is 64796237251313. The next prime is 64796237251357. The reversal of 64796237251321 is 12315273269746.

The square root of 64796237251321 is 8049611.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 64796237251321 - 2³ = 64796237251313 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64796237251301) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4024806 + ... + 12074416.

Almost surely, 2^{64796237251321} is an apocalyptic number.

64796237251321 is the 8049611-st square number.

64796237251321 is the 4024806-th centered octagonal number.

It is an amenable number.

64796237251321 is a deficient number, since it is larger than the sum of its proper divisors (8049612).

64796237251321 is an frugal number, since it uses more digits than its factorization.

64796237251321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16099222 (or 8049611 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 58.

The spelling of 64796237251321 in words is "sixty-four trillion, seven hundred ninety-six billion, two hundred thirty-seven million, two hundred fifty-one thousand, three hundred twenty-one".