4418573739681 has 16 divisors (see below), whose sum is σ = 5925197378880. Its totient is φ = 2928860531520.

The previous prime is 4418573739649. The next prime is 4418573739809. The reversal of 4418573739681 is 1869373758144.

It is not a de Polignac number, because 4418573739681 - 2⁵ = 4418573739649 is a prime.

It is a super-2 number, since 2×4418573739681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4418573739611) 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, 2804166 + ... + 4086623.

It is an arithmetic number, because the mean of its divisors is an integer number (370324836180).

Almost surely, 2^{4418573739681} is an apocalyptic number.

It is an amenable number.

4418573739681 is a deficient number, since it is larger than the sum of its proper divisors (1506623639199).

4418573739681 is a wasteful number, since it uses less digits than its factorization.

4418573739681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892016.

The product of its digits is 121927680, while the sum is 66.

The spelling of 4418573739681 in words is "four trillion, four hundred eighteen billion, five hundred seventy-three million, seven hundred thirty-nine thousand, six hundred eighty-one".