11138520740 has 24 divisors (see below), whose sum is σ = 23597897400. Its totient is φ = 4415979008.

The previous prime is 11138520739. The next prime is 11138520763. The reversal of 11138520740 is 4702583111.

11138520740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1277633536 + 9860887204 = 35744^2 + 99302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11138520697 and 11138520706.

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, 2462015 + ... + 2466534.

It is an arithmetic number, because the mean of its divisors is an integer number (983245725).

Almost surely, 2^11138520740 is an apocalyptic number.

11138520740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11138520740 is an abundant number, since it is smaller than the sum of its proper divisors (12459376660).

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

11138520740 is a wasteful number, since it uses less digits than its factorization.

11138520740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928671 (or 4928669 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 11138520740 in words is "eleven billion, one hundred thirty-eight million, five hundred twenty thousand, seven hundred forty".