2108400855 has 16 divisors (see below), whose sum is σ = 3680118144. Its totient is φ = 1022254880.

The previous prime is 2108400841. The next prime is 2108400881. The reversal of 2108400855 is 5580048012.

2108400855 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2108400855 - 2²³ = 2100012247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6388929 + ... + 6389258.

It is an arithmetic number, because the mean of its divisors is an integer number (230007384).

Almost surely, 2^2108400855 is an apocalyptic number.

2108400855 is a deficient number, since it is larger than the sum of its proper divisors (1571717289).

2108400855 is a wasteful number, since it uses less digits than its factorization.

2108400855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778206.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 2108400855 is about 45917.3263050017. The cubic root of 2108400855 is about 1282.2845056655.

Adding to 2108400855 its reverse (5580048012), we get a palindrome (7688448867).

The spelling of 2108400855 in words is "two billion, one hundred eight million, four hundred thousand, eight hundred fifty-five".