11585649450 has 24 divisors (see below), whose sum is σ = 28732411008. Its totient is φ = 3089506480.

The previous prime is 11585649433. The next prime is 11585649461. The reversal of 11585649450 is 5494658511.

It is a self number, because there is not a number n which added to its sum of digits gives 11585649450.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38618682 + ... + 38618981.

It is an arithmetic number, because the mean of its divisors is an integer number (1197183792).

Almost surely, 2^11585649450 is an apocalyptic number.

11585649450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11585649450 is an abundant number, since it is smaller than the sum of its proper divisors (17146761558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11585649450 is a wasteful number, since it uses less digits than its factorization.

11585649450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77237678 (or 77237673 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 11585649450 in words is "eleven billion, five hundred eighty-five million, six hundred forty-nine thousand, four hundred fifty".