11079381555 has 256 divisors, whose sum is σ = 23887872000. Its totient is φ = 4811788800.

The previous prime is 11079381553. The next prime is 11079381569. The reversal of 11079381555 is 55518397011.

11079381555 is a `hidden beast` number, since 1 + 1 + 0 + 7 + 93 + 8 + 1 + 555 = 666.

It is not a de Polignac number, because 11079381555 - 2¹ = 11079381553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11079381555.

It is not an unprimeable number, because it can be changed into a prime (11079381553) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 46357126 + ... + 46357364.

It is an arithmetic number, because the mean of its divisors is an integer number (93312000).

Almost surely, 2^11079381555 is an apocalyptic number.

11079381555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11079381555 is an abundant number, since it is smaller than the sum of its proper divisors (12808490445).

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

11079381555 is a wasteful number, since it uses less digits than its factorization.

11079381555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 45.

The spelling of 11079381555 in words is "eleven billion, seventy-nine million, three hundred eighty-one thousand, five hundred fifty-five".