464665576640561 has 8 divisors (see below), whose sum is σ = 464787584397864. Its totient is φ = 464543582267520.

The previous prime is 464665576640519. The next prime is 464665576640579. The reversal of 464665576640561 is 165046675566464.

It can be written as a sum of positive squares in 4 ways, for example, as 12802084000000 + 451863492640561 = 3578000^2 + 21257081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464665576640561 is a prime.

It is a super-2 number, since 2×464665576640561² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (464665576640761) 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, 66287771 + ... + 72961631.

It is an arithmetic number, because the mean of its divisors is an integer number (58098448049733).

Almost surely, 2^{464665576640561} is an apocalyptic number.

It is an amenable number.

464665576640561 is a deficient number, since it is larger than the sum of its proper divisors (122007757303).

464665576640561 is a wasteful number, since it uses less digits than its factorization.

464665576640561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692131.

The product of its (nonzero) digits is 2612736000, while the sum is 71.

The spelling of 464665576640561 in words is "four hundred sixty-four trillion, six hundred sixty-five billion, five hundred seventy-six million, six hundred forty thousand, five hundred sixty-one".