7878866022 has 12 divisors (see below), whose sum is σ = 17070876420. Its totient is φ = 2626288668.

The previous prime is 7878866003. The next prime is 7878866041. The reversal of 7878866022 is 2206688787.

It is an interprime number because it is at equal distance from previous prime (7878866003) and next prime (7878866041).

It is a super-2 number, since 2×7878866022² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7878866022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218857372 + ... + 218857407.

It is an arithmetic number, because the mean of its divisors is an integer number (1422573035).

Almost surely, 2^7878866022 is an apocalyptic number.

7878866022 is an abundant number, since it is smaller than the sum of its proper divisors (9192010398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7878866022 is a wasteful number, since it uses less digits than its factorization.

7878866022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437714787 (or 437714784 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The square root of 7878866022 is about 88762.9766400384. The cubic root of 7878866022 is about 1989.8541194208.

The spelling of 7878866022 in words is "seven billion, eight hundred seventy-eight million, eight hundred sixty-six thousand, twenty-two".