27945858466 has 8 divisors (see below), whose sum is σ = 42289750764. Its totient is φ = 13849274880.

The previous prime is 27945858461. The next prime is 27945858469. The reversal of 27945858466 is 66485854972.

It can be written as a sum of positive squares in 2 ways, for example, as 27358814025 + 587044441 = 165405^2 + 24229^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 27945858398 and 27945858407.

It is not an unprimeable number, because it can be changed into a prime (27945858461) 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, 61826895 + ... + 61827346.

Almost surely, 2^27945858466 is an apocalyptic number.

27945858466 is a deficient number, since it is larger than the sum of its proper divisors (14343892298).

27945858466 is a wasteful number, since it uses less digits than its factorization.

27945858466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123654356.

The product of its digits is 116121600, while the sum is 64.

The spelling of 27945858466 in words is "twenty-seven billion, nine hundred forty-five million, eight hundred fifty-eight thousand, four hundred sixty-six".