78174863352212 has 24 divisors (see below), whose sum is σ = 149249636696160. Its totient is φ = 35532429808160.

The previous prime is 78174863352211. The next prime is 78174863352251. The reversal of 78174863352212 is 21225336847187.

It is a super-2 number, since 2×78174863352212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78174863352211) 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, 38985518 + ... + 40941669.

It is an arithmetic number, because the mean of its divisors is an integer number (6218734862340).

Almost surely, 2^{78174863352212} is an apocalyptic number.

It is an amenable number.

78174863352212 is a deficient number, since it is larger than the sum of its proper divisors (71074773343948).

78174863352212 is a wasteful number, since it uses less digits than its factorization.

78174863352212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79949431 (or 79949429 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The spelling of 78174863352212 in words is "seventy-eight trillion, one hundred seventy-four billion, eight hundred sixty-three million, three hundred fifty-two thousand, two hundred twelve".