11631822049 has 4 divisors (see below), whose sum is σ = 11651981764. Its totient is φ = 11611662336.

The previous prime is 11631822029. The next prime is 11631822067. The reversal of 11631822049 is 94022813611.

11631822049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94022813611 = 1613 ⋅58290647.

It can be written as a sum of positive squares in 2 ways, for example, as 9305496225 + 2326325824 = 96465^2 + 48232^2 .

It is a cyclic number.

It is not a de Polignac number, because 11631822049 - 2⁷ = 11631821921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11631821999 and 11631822017.

It is not an unprimeable number, because it can be changed into a prime (11631822029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10078992 + ... + 10080145.

It is an arithmetic number, because the mean of its divisors is an integer number (2912995441).

Almost surely, 2^11631822049 is an apocalyptic number.

It is an amenable number.

11631822049 is a deficient number, since it is larger than the sum of its proper divisors (20159715).

11631822049 is an equidigital number, since it uses as much as digits as its factorization.

11631822049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20159714.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 11631822049 in words is "eleven billion, six hundred thirty-one million, eight hundred twenty-two thousand, forty-nine".