11111101000000 has 98 divisors (see below), whose sum is σ = 27560388511574. Its totient is φ = 4444440000000.

The previous prime is 11111100999989. The next prime is 11111101000003. The reversal of 11111101000000 is 10111111.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 10044639971584 + 1066461028416 = 3169328^2 + 1032696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111101000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 4555551 + ... + 6555550.

Almost surely, 2^{11111101000000} is an apocalyptic number.

11111101000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111101000000 is an abundant number, since it is smaller than the sum of its proper divisors (16449287511574).

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

11111101000000 is an frugal number, since it uses more digits than its factorization.

11111101000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111143 (or 11111108 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11111101000000 its reverse (10111111), we get a palindrome (11111111111111).

The spelling of 11111101000000 in words is "eleven trillion, one hundred eleven billion, one hundred one million", and thus it is an aban number.