78174887872378 has 8 divisors (see below), whose sum is σ = 127922543791200. Its totient is φ = 35534039941980.

The previous prime is 78174887872339. The next prime is 78174887872379. The reversal of 78174887872378 is 87327878847187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78174887872378² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78174887872295 and 78174887872304.

It is not an unprimeable number, because it can be changed into a prime (78174887872379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776701997078 + ... + 1776701997121.

It is an arithmetic number, because the mean of its divisors is an integer number (15990317973900).

Almost surely, 2^{78174887872378} is an apocalyptic number.

78174887872378 is a deficient number, since it is larger than the sum of its proper divisors (49747655918822).

78174887872378 is a wasteful number, since it uses less digits than its factorization.

78174887872378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553403994212.

The product of its digits is 13217562624, while the sum is 85.

The spelling of 78174887872378 in words is "seventy-eight trillion, one hundred seventy-four billion, eight hundred eighty-seven million, eight hundred seventy-two thousand, three hundred seventy-eight".