11038400855 has 4 divisors (see below), whose sum is σ = 13246081032. Its totient is φ = 8830720680.

The previous prime is 11038400843. The next prime is 11038400861. The reversal of 11038400855 is 55800483011.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11038400855 - 2⁸ = 11038400599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103840081 + ... + 1103840090.

It is an arithmetic number, because the mean of its divisors is an integer number (3311520258).

Almost surely, 2^11038400855 is an apocalyptic number.

11038400855 is a deficient number, since it is larger than the sum of its proper divisors (2207680177).

11038400855 is an equidigital number, since it uses as much as digits as its factorization.

11038400855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207680176.

The product of its (nonzero) digits is 19200, while the sum is 35.

Adding to 11038400855 its reverse (55800483011), we get a palindrome (66838883866).

The spelling of 11038400855 in words is "eleven billion, thirty-eight million, four hundred thousand, eight hundred fifty-five".