2111550056138 has 8 divisors (see below), whose sum is σ = 3183736095588. Its totient is φ = 1050304690944.

The previous prime is 2111550056131. The next prime is 2111550056153. The reversal of 2111550056138 is 8316500551112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2038107430129 + 73442626009 = 1427623^2 + 271003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2111550056131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735168081 + ... + 2735168852.

Almost surely, 2^{2111550056138} is an apocalyptic number.

2111550056138 is a deficient number, since it is larger than the sum of its proper divisors (1072186039450).

2111550056138 is a wasteful number, since it uses less digits than its factorization.

2111550056138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470337128.

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 2111550056138 in words is "two trillion, one hundred eleven billion, five hundred fifty million, fifty-six thousand, one hundred thirty-eight".