11287434649 has 2 divisors, whose sum is σ = 11287434650. Its totient is φ = 11287434648.

The previous prime is 11287434629. The next prime is 11287434757. The reversal of 11287434649 is 94643478211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10390132624 + 897302025 = 101932^2 + 29955^2 .

It is a cyclic number.

It is not a de Polignac number, because 11287434649 - 2¹⁹ = 11286910361 is a prime.

It is not a weakly prime, because it can be changed into another prime (11287434629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5643717324 + 5643717325.

It is an arithmetic number, because the mean of its divisors is an integer number (5643717325).

Almost surely, 2^11287434649 is an apocalyptic number.

It is an amenable number.

11287434649 is a deficient number, since it is larger than the sum of its proper divisors (1).

11287434649 is an equidigital number, since it uses as much as digits as its factorization.

11287434649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 49.

The spelling of 11287434649 in words is "eleven billion, two hundred eighty-seven million, four hundred thirty-four thousand, six hundred forty-nine".