11138567557 has 8 divisors (see below), whose sum is σ = 12047765240. Its totient is φ = 10236853440.

The previous prime is 11138567551. The next prime is 11138567567. The reversal of 11138567557 is 75576583111.

11138567557 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 5548164196 + 5590403361 = 74486^2 + 74769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11138567557 - 2¹⁵ = 11138534789 is a prime.

It is a super-3 number, since 3×11138567557³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11138567557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11138567551) by changing a digit.

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, 1867794 + ... + 1873747.

It is an arithmetic number, because the mean of its divisors is an integer number (1505970655).

Almost surely, 2^11138567557 is an apocalyptic number.

It is an amenable number.

11138567557 is a deficient number, since it is larger than the sum of its proper divisors (909197683).

11138567557 is a wasteful number, since it uses less digits than its factorization.

11138567557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741783.

The product of its digits is 882000, while the sum is 49.

The spelling of 11138567557 in words is "eleven billion, one hundred thirty-eight million, five hundred sixty-seven thousand, five hundred fifty-seven".