11081400980 has 36 divisors (see below), whose sum is σ = 25198720092. Its totient is φ = 4091592960.

The previous prime is 11081400973. The next prime is 11081401049. The reversal of 11081400980 is 8900418011.

It can be written as a sum of positive squares in 6 ways, for example, as 4359696784 + 6721704196 = 66028^2 + 81986^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1635881 + ... + 1642640.

It is an arithmetic number, because the mean of its divisors is an integer number (699964447).

Almost surely, 2^11081400980 is an apocalyptic number.

11081400980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11081400980 is an abundant number, since it is smaller than the sum of its proper divisors (14117319112).

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

11081400980 is a wasteful number, since it uses less digits than its factorization.

11081400980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278556 (or 3278541 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

Adding to 11081400980 its reverse (8900418011), we get a palindrome (19981818991).

The spelling of 11081400980 in words is "eleven billion, eighty-one million, four hundred thousand, nine hundred eighty".