11213972780 has 24 divisors (see below), whose sum is σ = 23551559808. Its totient is φ = 4485166848.

The previous prime is 11213972779. The next prime is 11213972797. The reversal of 11213972780 is 8727931211.

It is a happy number.

11213972780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275717 + ... + 313763.

It is an arithmetic number, because the mean of its divisors is an integer number (981314992).

Almost surely, 2^11213972780 is an apocalyptic number.

11213972780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213972780 is an abundant number, since it is smaller than the sum of its proper divisors (12337587028).

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

11213972780 is a wasteful number, since it uses less digits than its factorization.

11213972780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52793 (or 52791 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 11213972780 in words is "eleven billion, two hundred thirteen million, nine hundred seventy-two thousand, seven hundred eighty".