64195330247 has 4 divisors (see below), whose sum is σ = 64205573376. Its totient is φ = 64185087120.

The previous prime is 64195330223. The next prime is 64195330289. The reversal of 64195330247 is 74203359146.

64195330247 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 not a de Polignac number, because 64195330247 - 2¹⁴ = 64195313863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64195330198 and 64195330207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64195330217) 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, 5112158 + ... + 5124699.

It is an arithmetic number, because the mean of its divisors is an integer number (16051393344).

Almost surely, 2^64195330247 is an apocalyptic number.

64195330247 is a deficient number, since it is larger than the sum of its proper divisors (10243129).

64195330247 is a wasteful number, since it uses less digits than its factorization.

64195330247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243128.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 64195330247 in words is "sixty-four billion, one hundred ninety-five million, three hundred thirty thousand, two hundred forty-seven".