11118640779280 has 20 divisors (see below), whose sum is σ = 25850839812012. Its totient is φ = 4447456311680.

The previous prime is 11118640779271. The next prime is 11118640779287. The reversal of 11118640779280 is 8297704681111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3327151106304 + 7791489672976 = 1824048^2 + 2791324^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (11118640779287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69491504791 + ... + 69491504950.

Almost surely, 2^{11118640779280} is an apocalyptic number.

11118640779280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11118640779280 is an abundant number, since it is smaller than the sum of its proper divisors (14732199032732).

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

11118640779280 is a wasteful number, since it uses less digits than its factorization.

11118640779280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138983009754 (or 138983009748 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 55.

The spelling of 11118640779280 in words is "eleven trillion, one hundred eighteen billion, six hundred forty million, seven hundred seventy-nine thousand, two hundred eighty".