11110400020 has 24 divisors (see below), whose sum is σ = 23342041800. Its totient is φ = 4442216832.

The previous prime is 11110400009. The next prime is 11110400023. The reversal of 11110400020 is 2000401111.

It can be written as a sum of positive squares in 4 ways, for example, as 3405422736 + 7704977284 = 58356^2 + 87778^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110400023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74115 + ... + 166474.

It is an arithmetic number, because the mean of its divisors is an integer number (972585075).

Almost surely, 2^11110400020 is an apocalyptic number.

11110400020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11110400020 is an abundant number, since it is smaller than the sum of its proper divisors (12231641780).

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

11110400020 is a wasteful number, since it uses less digits than its factorization.

11110400020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242907 (or 242905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11110400020 its reverse (2000401111), we get a palindrome (13110801131).

The spelling of 11110400020 in words is "eleven billion, one hundred ten million, four hundred thousand, twenty".