64645601351 has 4 divisors (see below), whose sum is σ = 64816170600. Its totient is φ = 64475032104.

The previous prime is 64645601333. The next prime is 64645601353. The reversal of 64645601351 is 15310654646.

64645601351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64645601351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64645601299 and 64645601308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64645601353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85284056 + ... + 85284813.

It is an arithmetic number, because the mean of its divisors is an integer number (16204042650).

Almost surely, 2^64645601351 is an apocalyptic number.

64645601351 is a deficient number, since it is larger than the sum of its proper divisors (170569249).

64645601351 is a wasteful number, since it uses less digits than its factorization.

64645601351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170569248.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 64645601351 in words is "sixty-four billion, six hundred forty-five million, six hundred one thousand, three hundred fifty-one".