11249427380 has 12 divisors (see below), whose sum is σ = 23623797540. Its totient is φ = 4499770944.

The previous prime is 11249427379. The next prime is 11249427407. The reversal of 11249427380 is 8372494211.

It can be written as a sum of positive squares in 2 ways, for example, as 8220686224 + 3028741156 = 90668^2 + 55034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281235665 + ... + 281235704.

It is an arithmetic number, because the mean of its divisors is an integer number (1968649795).

Almost surely, 2^11249427380 is an apocalyptic number.

11249427380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11249427380 is an abundant number, since it is smaller than the sum of its proper divisors (12374370160).

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

11249427380 is a wasteful number, since it uses less digits than its factorization.

11249427380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562471378 (or 562471376 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 11249427380 in words is "eleven billion, two hundred forty-nine million, four hundred twenty-seven thousand, three hundred eighty".