7006421818 has 16 divisors (see below), whose sum is σ = 11467928160. Its totient is φ = 3183938800.

The previous prime is 7006421797. The next prime is 7006421819. The reversal of 7006421818 is 8181246007.

It is not an unprimeable number, because it can be changed into a prime (7006421819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54828 + ... + 130456.

It is an arithmetic number, because the mean of its divisors is an integer number (716745510).

Almost surely, 2^7006421818 is an apocalyptic number.

7006421818 is a deficient number, since it is larger than the sum of its proper divisors (4461506342).

7006421818 is a wasteful number, since it uses less digits than its factorization.

7006421818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79853.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 7006421818 is about 83704.3715584795. The cubic root of 7006421818 is about 1913.5159799727.

It can be divided in two parts, 7006 and 421818, that added together give a palindrome (428824).

The spelling of 7006421818 in words is "seven billion, six million, four hundred twenty-one thousand, eight hundred eighteen".