11138055558 has 16 divisors (see below), whose sum is σ = 25458412800. Its totient is φ = 3182301576.

The previous prime is 11138055479. The next prime is 11138055583. The reversal of 11138055558 is 85555083111.

It is a super-3 number, since 3×11138055558³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 265191799 = 11138055558 / (1 + 1 + 1 + 3 + 8 + 0 + 5 + 5 + 5 + 5 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132595858 + ... + 132595941.

It is an arithmetic number, because the mean of its divisors is an integer number (1591150800).

Almost surely, 2^11138055558 is an apocalyptic number.

11138055558 is an abundant number, since it is smaller than the sum of its proper divisors (14320357242).

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

11138055558 is a wasteful number, since it uses less digits than its factorization.

11138055558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265191811.

The product of its (nonzero) digits is 120000, while the sum is 42.

The spelling of 11138055558 in words is "eleven billion, one hundred thirty-eight million, fifty-five thousand, five hundred fifty-eight".