78228458044654 has 8 divisors (see below), whose sum is σ = 118062580853160. Its totient is φ = 38874264426936.

The previous prime is 78228458044643. The next prime is 78228458044703. The reversal of 78228458044654 is 45644085482287.

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

It is a super-2 number, since 2×78228458044654² (a number of 29 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 78228458044654.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119982297289 + ... + 119982297940.

It is an arithmetic number, because the mean of its divisors is an integer number (14757822606645).

Almost surely, 2^{78228458044654} is an apocalyptic number.

78228458044654 is a deficient number, since it is larger than the sum of its proper divisors (39834122808506).

78228458044654 is a wasteful number, since it uses less digits than its factorization.

78228458044654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239964595394.

The product of its (nonzero) digits is 550502400, while the sum is 67.

The spelling of 78228458044654 in words is "seventy-eight trillion, two hundred twenty-eight billion, four hundred fifty-eight million, forty-four thousand, six hundred fifty-four".