64872876506345 has 4 divisors (see below), whose sum is σ = 77847451807620. Its totient is φ = 51898301205072.

The previous prime is 64872876506327. The next prime is 64872876506351. The reversal of 64872876506345 is 54360567827846.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13183376715664 + 51689499790681 = 3630892^2 + 7189541^2 .

It is a cyclic number.

It is not a de Polignac number, because 64872876506345 - 2²⁰ = 64872875457769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6487287650630 + ... + 6487287650639.

It is an arithmetic number, because the mean of its divisors is an integer number (19461862951905).

Almost surely, 2^{64872876506345} is an apocalyptic number.

It is an amenable number.

64872876506345 is a deficient number, since it is larger than the sum of its proper divisors (12974575301275).

64872876506345 is a wasteful number, since it uses less digits than its factorization.

64872876506345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12974575301274.

The product of its (nonzero) digits is 1625702400, while the sum is 71.

The spelling of 64872876506345 in words is "sixty-four trillion, eight hundred seventy-two billion, eight hundred seventy-six million, five hundred six thousand, three hundred forty-five".