11123782020 has 72 divisors (see below), whose sum is σ = 36337695576. Its totient is φ = 2738161152.

The previous prime is 11123782001. The next prime is 11123782067. The reversal of 11123782020 is 2028732111.

It can be written as a sum of positive squares in 4 ways, for example, as 17994564 + 11105787456 = 4242^2 + 105384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2374537 + ... + 2379216.

Almost surely, 2^11123782020 is an apocalyptic number.

11123782020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123782020 is an abundant number, since it is smaller than the sum of its proper divisors (25213913556).

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

11123782020 is a wasteful number, since it uses less digits than its factorization.

11123782020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753781 (or 4753776 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The spelling of 11123782020 in words is "eleven billion, one hundred twenty-three million, seven hundred eighty-two thousand, twenty".