11238740978205 has 32 divisors (see below), whose sum is σ = 19989899596800. Its totient is φ = 5354437386240.

The previous prime is 11238740978183. The next prime is 11238740978209. The reversal of 11238740978205 is 50287904783211.

It is a happy number.

11238740978205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11238740978205 - 2⁷ = 11238740978077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11238740978209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 929583780 + ... + 929595869.

It is an arithmetic number, because the mean of its divisors is an integer number (624684362400).

Almost surely, 2^{11238740978205} is an apocalyptic number.

11238740978205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11238740978205 is a deficient number, since it is larger than the sum of its proper divisors (8751158618595).

11238740978205 is a wasteful number, since it uses less digits than its factorization.

11238740978205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859179701.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 11238740978205 in words is "eleven trillion, two hundred thirty-eight billion, seven hundred forty million, nine hundred seventy-eight thousand, two hundred five".