11199999998977 has 2 divisors, whose sum is σ = 11199999998978. Its totient is φ = 11199999998976.

The previous prime is 11199999998959. The next prime is 11199999998987. The reversal of 11199999998977 is 77989999999111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6041646016576 + 5158353982401 = 2457976^2 + 2271201^2 .

It is a cyclic number.

It is not a de Polignac number, because 11199999998977 - 2¹¹ = 11199999996929 is a prime.

It is not a weakly prime, because it can be changed into another prime (11199999998987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599999999488 + 5599999999489.

It is an arithmetic number, because the mean of its divisors is an integer number (5599999999489).

Almost surely, 2^{11199999998977} is an apocalyptic number.

It is an amenable number.

11199999998977 is a deficient number, since it is larger than the sum of its proper divisors (1).

11199999998977 is an equidigital number, since it uses as much as digits as its factorization.

11199999998977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16874314632, while the sum is 97.

The spelling of 11199999998977 in words is "eleven trillion, one hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred seventy-seven".