7818078022 has 16 divisors (see below), whose sum is σ = 12046435632. Its totient is φ = 3802641120.

The previous prime is 7818078019. The next prime is 7818078041. The reversal of 7818078022 is 2208708187.

It is a super-2 number, since 2×7818078022² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7818078022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649753 + ... + 661675.

It is an arithmetic number, because the mean of its divisors is an integer number (752902227).

Almost surely, 2^7818078022 is an apocalyptic number.

7818078022 is a deficient number, since it is larger than the sum of its proper divisors (4228357610).

7818078022 is a wasteful number, since it uses less digits than its factorization.

7818078022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20823.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 7818078022 is about 88419.8960754874. The cubic root of 7818078022 is about 1984.7234457059.

The spelling of 7818078022 in words is "seven billion, eight hundred eighteen million, seventy-eight thousand, twenty-two".