11481777049 has 2 divisors, whose sum is σ = 11481777050. Its totient is φ = 11481777048.

The previous prime is 11481777019. The next prime is 11481777071. The reversal of 11481777049 is 94077718411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10926939024 + 554838025 = 104532^2 + 23555^2 .

It is an emirp because it is prime and its reverse (94077718411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11481777049 - 2⁷ = 11481776921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11481776993 and 11481777011.

It is not a weakly prime, because it can be changed into another prime (11481777019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5740888524 + 5740888525.

It is an arithmetic number, because the mean of its divisors is an integer number (5740888525).

Almost surely, 2^11481777049 is an apocalyptic number.

It is an amenable number.

11481777049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11481777049 is an equidigital number, since it uses as much as digits as its factorization.

11481777049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 11481777049 in words is "eleven billion, four hundred eighty-one million, seven hundred seventy-seven thousand, forty-nine".