11869659648 has 840 divisors, whose sum is σ = 45888424560. Its totient is φ = 3030773760.

The previous prime is 11869659647. The next prime is 11869659653. The reversal of 11869659648 is 84695696811.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (22394880) is a multiple of the sum of its prime factors (120).

It is not an unprimeable number, because it can be changed into a prime (11869659643) by changing a digit.

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 in 83 ways as a sum of consecutive naturals, for example, 201180643 + ... + 201180701.

Almost surely, 2^11869659648 is an apocalyptic number.

11869659648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11869659648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22944212280).

11869659648 is an abundant number, since it is smaller than the sum of its proper divisors (34018764912).

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

11869659648 is an frugal number, since it uses more digits than its factorization.

11869659648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 82 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 11869659648 in words is "eleven billion, eight hundred sixty-nine million, six hundred fifty-nine thousand, six hundred forty-eight".