11777784444506 has 4 divisors (see below), whose sum is σ = 17666676666762. Its totient is φ = 5888892222252.

The previous prime is 11777784444497. The next prime is 11777784444551. The reversal of 11777784444506 is 60544448777711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9287810903281 + 2489973541225 = 3047591^2 + 1577965^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2944446111125 + ... + 2944446111128.

Almost surely, 2^{11777784444506} is an apocalyptic number.

11777784444506 is a deficient number, since it is larger than the sum of its proper divisors (5888892222256).

11777784444506 is an equidigital number, since it uses as much as digits as its factorization.

11777784444506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888892222255.

The product of its (nonzero) digits is 147517440, while the sum is 65.

The spelling of 11777784444506 in words is "eleven trillion, seven hundred seventy-seven billion, seven hundred eighty-four million, four hundred forty-four thousand, five hundred six".