254120542544111 has 4 divisors (see below), whose sum is σ = 260318604557424. Its totient is φ = 247922480530800.

The previous prime is 254120542544107. The next prime is 254120542544191. The reversal of 254120542544111 is 111445245021452.

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

It is a cyclic number.

It is not a de Polignac number, because 254120542544111 - 2² = 254120542544107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 6198062013271 = 254120542544111 / (2 + 5 + 4 + 1 + 2 + 0 + 5 + 4 + 2 + 5 + 4 + 4 + 1 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254120542544191) 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, 3099031006595 + ... + 3099031006676.

It is an arithmetic number, because the mean of its divisors is an integer number (65079651139356).

Almost surely, 2^{254120542544111} is an apocalyptic number.

254120542544111 is a deficient number, since it is larger than the sum of its proper divisors (6198062013313).

254120542544111 is an equidigital number, since it uses as much as digits as its factorization.

254120542544111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198062013312.

The product of its (nonzero) digits is 256000, while the sum is 41.

Adding to 254120542544111 its reverse (111445245021452), we get a palindrome (365565787565563).

The spelling of 254120542544111 in words is "two hundred fifty-four trillion, one hundred twenty billion, five hundred forty-two million, five hundred forty-four thousand, one hundred eleven".