264506640134666 has 8 divisors (see below), whose sum is σ = 397157914026660. Its totient is φ = 132120668792448.

The previous prime is 264506640134651. The next prime is 264506640134677. The reversal of 264506640134666 is 666431046605462.

It can be written as a sum of positive squares in 2 ways, for example, as 264481233368641 + 25406766025 = 16262879^2 + 159395^2 .

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

It is a super-2 number, since 2×264506640134666² (a number of 30 digits) contains 22 as substring.

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, 66325634951 + ... + 66325638938.

Almost surely, 2^{264506640134666} is an apocalyptic number.

264506640134666 is a deficient number, since it is larger than the sum of its proper divisors (132651273891994).

264506640134666 is a wasteful number, since it uses less digits than its factorization.

264506640134666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132651274888.

The product of its (nonzero) digits is 89579520, while the sum is 59.

The spelling of 264506640134666 in words is "two hundred sixty-four trillion, five hundred six billion, six hundred forty million, one hundred thirty-four thousand, six hundred sixty-six".