11121678257780 has 48 divisors (see below), whose sum is σ = 24175924053120. Its totient is φ = 4292595635328.

The previous prime is 11121678257749. The next prime is 11121678257797. The reversal of 11121678257780 is 8775287612111.

It is a super-2 number, since 2×11121678257780² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5034122 + ... + 6898241.

It is an arithmetic number, because the mean of its divisors is an integer number (503665084440).

Almost surely, 2^{11121678257780} is an apocalyptic number.

11121678257780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121678257780 is an abundant number, since it is smaller than the sum of its proper divisors (13054245795340).

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

11121678257780 is a wasteful number, since it uses less digits than its factorization.

11121678257780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934008 (or 11934006 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 56.

The spelling of 11121678257780 in words is "eleven trillion, one hundred twenty-one billion, six hundred seventy-eight million, two hundred fifty-seven thousand, seven hundred eighty".