2218134730451 has 4 divisors (see below), whose sum is σ = 2227654622232. Its totient is φ = 2208614838672.

The previous prime is 2218134730447. The next prime is 2218134730489. The reversal of 2218134730451 is 1540374318122.

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 2218134730451 - 2² = 2218134730447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2218134730399 and 2218134730408.

It is not an unprimeable number, because it can be changed into a prime (2218134730421) 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, 4759945541 + ... + 4759946006.

It is an arithmetic number, because the mean of its divisors is an integer number (556913655558).

Almost surely, 2^{2218134730451} is an apocalyptic number.

2218134730451 is a deficient number, since it is larger than the sum of its proper divisors (9519891781).

2218134730451 is an equidigital number, since it uses as much as digits as its factorization.

2218134730451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519891780.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 2218134730451 in words is "two trillion, two hundred eighteen billion, one hundred thirty-four million, seven hundred thirty thousand, four hundred fifty-one".