11248778020 has 24 divisors (see below), whose sum is σ = 23673694968. Its totient is φ = 4489747200.

The previous prime is 11248777937. The next prime is 11248778083. The reversal of 11248778020 is 2087784211.

It can be written as a sum of positive squares in 4 ways, for example, as 3492100836 + 7756677184 = 59094^2 + 88072^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600801 + ... + 619240.

It is an arithmetic number, because the mean of its divisors is an integer number (986403957).

Almost surely, 2^11248778020 is an apocalyptic number.

11248778020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11248778020 is an abundant number, since it is smaller than the sum of its proper divisors (12424916948).

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

11248778020 is a wasteful number, since it uses less digits than its factorization.

11248778020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220511 (or 1220509 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The spelling of 11248778020 in words is "eleven billion, two hundred forty-eight million, seven hundred seventy-eight thousand, twenty".