11979707079648 has 432 divisors, whose sum is σ = 42392001141504. Its totient is φ = 2928572559360.

The previous prime is 11979707079647. The next prime is 11979707079653. The reversal of 11979707079648 is 84697070797911.

It is a self number, because there is not a number n which added to its sum of digits gives 11979707079648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11979707079647) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14553465 + ... + 15354567.

It is an arithmetic number, because the mean of its divisors is an integer number (98129632272).

Almost surely, 2^{11979707079648} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11979707079648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21196000570752).

11979707079648 is an abundant number, since it is smaller than the sum of its proper divisors (30412294061856).

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

11979707079648 is a wasteful number, since it uses less digits than its factorization.

11979707079648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801175 (or 801143 counting only the distinct ones).

The product of its (nonzero) digits is 336063168, while the sum is 75.

The spelling of 11979707079648 in words is "eleven trillion, nine hundred seventy-nine billion, seven hundred seven million, seventy-nine thousand, six hundred forty-eight".