11315966777 has 2 divisors, whose sum is σ = 11315966778. Its totient is φ = 11315966776.

The previous prime is 11315966687. The next prime is 11315966803. The reversal of 11315966777 is 77766951311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10285813561 + 1030153216 = 101419^2 + 32096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11315966777 is a prime.

It is a super-2 number, since 2×11315966777² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11315963777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5657983388 + 5657983389.

It is an arithmetic number, because the mean of its divisors is an integer number (5657983389).

Almost surely, 2^11315966777 is an apocalyptic number.

It is an amenable number.

11315966777 is a deficient number, since it is larger than the sum of its proper divisors (1).

11315966777 is an equidigital number, since it uses as much as digits as its factorization.

11315966777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 53.

The spelling of 11315966777 in words is "eleven billion, three hundred fifteen million, nine hundred sixty-six thousand, seven hundred seventy-seven".