64344506706745 has 4 divisors (see below), whose sum is σ = 77213408048100. Its totient is φ = 51475605365392.

The previous prime is 64344506706721. The next prime is 64344506706757. The reversal of 64344506706745 is 54760760544346.

It is a happy number.

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 51373070585001 + 12971436121744 = 7167501^2 + 3601588^2 .

It is a cyclic number.

It is not a de Polignac number, because 64344506706745 - 2²⁷ = 64344372489017 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, 6434450670670 + ... + 6434450670679.

It is an arithmetic number, because the mean of its divisors is an integer number (19303352012025).

Almost surely, 2^{64344506706745} is an apocalyptic number.

It is an amenable number.

64344506706745 is a deficient number, since it is larger than the sum of its proper divisors (12868901341355).

64344506706745 is a wasteful number, since it uses less digits than its factorization.

64344506706745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12868901341354.

The product of its (nonzero) digits is 203212800, while the sum is 61.

The spelling of 64344506706745 in words is "sixty-four trillion, three hundred forty-four billion, five hundred six million, seven hundred six thousand, seven hundred forty-five".