2154143565211 has 16 divisors (see below), whose sum is σ = 2423736442368. Its totient is φ = 1897669372000.

The previous prime is 2154143565199. The next prime is 2154143565221. The reversal of 2154143565211 is 1125653414512.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154143565211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154143565221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20574625 + ... + 20679058.

It is an arithmetic number, because the mean of its divisors is an integer number (151483527648).

Almost surely, 2^{2154143565211} is an apocalyptic number.

2154143565211 is a deficient number, since it is larger than the sum of its proper divisors (269592877157).

2154143565211 is a wasteful number, since it uses less digits than its factorization.

2154143565211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41253842.

The product of its digits is 144000, while the sum is 40.

Adding to 2154143565211 its reverse (1125653414512), we get a palindrome (3279796979723).

The spelling of 2154143565211 in words is "two trillion, one hundred fifty-four billion, one hundred forty-three million, five hundred sixty-five thousand, two hundred eleven".