2144806558451 has 4 divisors (see below), whose sum is σ = 2202774303312. Its totient is φ = 2086838813592.

The previous prime is 2144806558423. The next prime is 2144806558463. The reversal of 2144806558451 is 1548556084412.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2144806558451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144806558393 and 2144806558402.

It is not an unprimeable number, because it can be changed into a prime (2144806558481) 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, 28983872375 + ... + 28983872448.

It is an arithmetic number, because the mean of its divisors is an integer number (550693575828).

Almost surely, 2^{2144806558451} is an apocalyptic number.

2144806558451 is a deficient number, since it is larger than the sum of its proper divisors (57967744861).

2144806558451 is an equidigital number, since it uses as much as digits as its factorization.

2144806558451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57967744860.

The product of its (nonzero) digits is 6144000, while the sum is 53.

The spelling of 2144806558451 in words is "two trillion, one hundred forty-four billion, eight hundred six million, five hundred fifty-eight thousand, four hundred fifty-one".