10953677666 has 4 divisors (see below), whose sum is σ = 16430516502. Its totient is φ = 5476838832.

The previous prime is 10953677663. The next prime is 10953677681. The reversal of 10953677666 is 66677635901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66677635901 = 10487 ⋅6358123.

It can be written as a sum of positive squares in only one way, i.e., 5716116025 + 5237561641 = 75605^2 + 72371^2 .

It is not an unprimeable number, because it can be changed into a prime (10953677663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2738419415 + ... + 2738419418.

Almost surely, 2^10953677666 is an apocalyptic number.

10953677666 is a deficient number, since it is larger than the sum of its proper divisors (5476838836).

10953677666 is an equidigital number, since it uses as much as digits as its factorization.

10953677666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476838835.

The product of its (nonzero) digits is 8573040, while the sum is 56.

The spelling of 10953677666 in words is "ten billion, nine hundred fifty-three million, six hundred seventy-seven thousand, six hundred sixty-six".