11649011649 has 32 divisors (see below), whose sum is σ = 17161987968. Its totient is φ = 6969600000.

The previous prime is 11649011599. The next prime is 11649011681. The reversal of 11649011649 is 94611094611.

It is not a de Polignac number, because 11649011649 - 2⁹ = 11649011137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11649011649.

It is not an unprimeable number, because it can be changed into a prime (11649011149) 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 in 31 ways as a sum of consecutive naturals, for example, 1171599 + ... + 1181499.

It is an arithmetic number, because the mean of its divisors is an integer number (536312124).

Almost surely, 2^11649011649 is an apocalyptic number.

It is an amenable number.

11649011649 is a deficient number, since it is larger than the sum of its proper divisors (5512976319).

11649011649 is a wasteful number, since it uses less digits than its factorization.

11649011649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 11649011649 in words is "eleven billion, six hundred forty-nine million, eleven thousand, six hundred forty-nine".