64771741426321 has 8 divisors (see below), whose sum is σ = 65833749434600. Its totient is φ = 63709739101440.

The previous prime is 64771741426291. The next prime is 64771741426373. The reversal of 64771741426321 is 12362414717746.

It can be written as a sum of positive squares in 4 ways, for example, as 3953579466321 + 60818161960000 = 1988361^2 + 7798600^2 .

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 64771741426321 - 2⁵ = 64771741426289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64771741424321) 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, 25799635 + ... + 28198663.

It is an arithmetic number, because the mean of its divisors is an integer number (8229218679325).

Almost surely, 2^{64771741426321} is an apocalyptic number.

64771741426321 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

64771741426321 is a deficient number, since it is larger than the sum of its proper divisors (1062008008279).

64771741426321 is a wasteful number, since it uses less digits than its factorization.

64771741426321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841699.

The product of its digits is 9483264, while the sum is 55.

The spelling of 64771741426321 in words is "sixty-four trillion, seven hundred seventy-one billion, seven hundred forty-one million, four hundred twenty-six thousand, three hundred twenty-one".