2451220024243 has 4 divisors (see below), whose sum is σ = 2462837180968. Its totient is φ = 2439602867520.

The previous prime is 2451220024219. The next prime is 2451220024259. The reversal of 2451220024243 is 3424200221542.

It is a happy number.

2451220024243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2451220024243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2451220024543) 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, 5808578046 + ... + 5808578467.

It is an arithmetic number, because the mean of its divisors is an integer number (615709295242).

Almost surely, 2^{2451220024243} is an apocalyptic number.

2451220024243 is a deficient number, since it is larger than the sum of its proper divisors (11617156725).

2451220024243 is a wasteful number, since it uses less digits than its factorization.

2451220024243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11617156724.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 2451220024243 its reverse (3424200221542), we get a palindrome (5875420245785).

The spelling of 2451220024243 in words is "two trillion, four hundred fifty-one billion, two hundred twenty million, twenty-four thousand, two hundred forty-three".