11155938247780 has 48 divisors (see below), whose sum is σ = 24661693728000. Its totient is φ = 4227307958016.

The previous prime is 11155938247691. The next prime is 11155938247787. The reversal of 11155938247780 is 8774283955111.

It is not an unprimeable number, because it can be changed into a prime (11155938247787) 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 15 ways as a sum of consecutive naturals, for example, 7230976 + ... + 8637064.

It is an arithmetic number, because the mean of its divisors is an integer number (513785286000).

Almost surely, 2^{11155938247780} is an apocalyptic number.

11155938247780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11155938247780 is an abundant number, since it is smaller than the sum of its proper divisors (13505755480220).

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

11155938247780 is a wasteful number, since it uses less digits than its factorization.

11155938247780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426996 (or 1426994 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 61.

The spelling of 11155938247780 in words is "eleven trillion, one hundred fifty-five billion, nine hundred thirty-eight million, two hundred forty-seven thousand, seven hundred eighty".