2111556546041 has 4 divisors (see below), whose sum is σ = 2160662512272. Its totient is φ = 2062450579812.

The previous prime is 2111556546037. The next prime is 2111556546079. The reversal of 2111556546041 is 1406456551112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2111556546041 - 2² = 2111556546037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111556546041.

It is not an unprimeable number, because it can be changed into a prime (2111556546091) 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, 24552983051 + ... + 24552983136.

It is an arithmetic number, because the mean of its divisors is an integer number (540165628068).

Almost surely, 2^{2111556546041} is an apocalyptic number.

It is an amenable number.

2111556546041 is a deficient number, since it is larger than the sum of its proper divisors (49105966231).

2111556546041 is an equidigital number, since it uses as much as digits as its factorization.

2111556546041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49105966230.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 2111556546041 in words is "two trillion, one hundred eleven billion, five hundred fifty-six million, five hundred forty-six thousand, forty-one".