78222277188208 has 40 divisors (see below), whose sum is σ = 151971580450800. Its totient is φ = 39003818072064.

The previous prime is 78222277188193. The next prime is 78222277188221. The reversal of 78222277188208 is 80288177222287.

It is a super-2 number, since 2×78222277188208² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78222277188208.

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, 95911488 + ... + 96723616.

It is an arithmetic number, because the mean of its divisors is an integer number (3799289511270).

Almost surely, 2^{78222277188208} is an apocalyptic number.

It is an amenable number.

78222277188208 is a deficient number, since it is larger than the sum of its proper divisors (73749303262592).

78222277188208 is a wasteful number, since it uses less digits than its factorization.

78222277188208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828649 (or 828643 counting only the distinct ones).

The product of its (nonzero) digits is 44957696, while the sum is 64.

The spelling of 78222277188208 in words is "seventy-eight trillion, two hundred twenty-two billion, two hundred seventy-seven million, one hundred eighty-eight thousand, two hundred eight".