11999939177 has 2 divisors, whose sum is σ = 11999939178. Its totient is φ = 11999939176.

The previous prime is 11999939173. The next prime is 11999939183. The reversal of 11999939177 is 77193999911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9673902736 + 2326036441 = 98356^2 + 48229^2 .

It is a cyclic number.

It is not a de Polignac number, because 11999939177 - 2² = 11999939173 is a prime.

It is not a weakly prime, because it can be changed into another prime (11999939173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5999969588 + 5999969589.

It is an arithmetic number, because the mean of its divisors is an integer number (5999969589).

Almost surely, 2^11999939177 is an apocalyptic number.

It is an amenable number.

11999939177 is a deficient number, since it is larger than the sum of its proper divisors (1).

11999939177 is an equidigital number, since it uses as much as digits as its factorization.

11999939177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8680203, while the sum is 65.

The spelling of 11999939177 in words is "eleven billion, nine hundred ninety-nine million, nine hundred thirty-nine thousand, one hundred seventy-seven".