11137811380 has 12 divisors (see below), whose sum is σ = 23389403940. Its totient is φ = 4455124544.

The previous prime is 11137811371. The next prime is 11137811383. The reversal of 11137811380 is 8311873111.

It can be written as a sum of positive squares in 2 ways, for example, as 7977347856 + 3160463524 = 89316^2 + 56218^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11137811383) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 278445265 + ... + 278445304.

It is an arithmetic number, because the mean of its divisors is an integer number (1949116995).

Almost surely, 2^11137811380 is an apocalyptic number.

11137811380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11137811380 is an abundant number, since it is smaller than the sum of its proper divisors (12251592560).

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

11137811380 is a wasteful number, since it uses less digits than its factorization.

11137811380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556890578 (or 556890576 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The spelling of 11137811380 in words is "eleven billion, one hundred thirty-seven million, eight hundred eleven thousand, three hundred eighty".