11333778105 has 64 divisors (see below), whose sum is σ = 20409016320. Its totient is φ = 5333803776.

The previous prime is 11333778097. The next prime is 11333778107. The reversal of 11333778105 is 50187733311.

It is not a de Polignac number, because 11333778105 - 2³ = 11333778097 is a prime.

It is a super-2 number, since 2×11333778105² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11333778107) 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 63 ways as a sum of consecutive naturals, for example, 379716 + ... + 408474.

It is an arithmetic number, because the mean of its divisors is an integer number (318890880).

Almost surely, 2^11333778105 is an apocalyptic number.

11333778105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11333778105 is a deficient number, since it is larger than the sum of its proper divisors (9075238215).

11333778105 is a wasteful number, since it uses less digits than its factorization.

11333778105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28870.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 11333778105 in words is "eleven billion, three hundred thirty-three million, seven hundred seventy-eight thousand, one hundred five".