11649209344 has 22 divisors (see below), whose sum is σ = 23287044554. Its totient is φ = 5824604160.

The previous prime is 11649209333. The next prime is 11649209401. The reversal of 11649209344 is 44390294611.

It can be written as a sum of positive squares in only one way, i.e., 11601874944 + 47334400 = 107712^2 + 6880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11649209344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687067 + ... + 5689114.

Almost surely, 2^11649209344 is an apocalyptic number.

It is an amenable number.

11649209344 is a deficient number, since it is larger than the sum of its proper divisors (11637835210).

11649209344 is an equidigital number, since it uses as much as digits as its factorization.

11649209344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11376201 (or 11376183 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 11649209344 in words is "eleven billion, six hundred forty-nine million, two hundred nine thousand, three hundred forty-four".