8219472455078 has 4 divisors (see below), whose sum is σ = 12329208682620. Its totient is φ = 4109736227538.

The previous prime is 8219472455011. The next prime is 8219472455101. The reversal of 8219472455078 is 8705542749128.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8219472455078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2054868113768 + ... + 2054868113771.

It is an arithmetic number, because the mean of its divisors is an integer number (3082302170655).

Almost surely, 2^{8219472455078} is an apocalyptic number.

8219472455078 is a deficient number, since it is larger than the sum of its proper divisors (4109736227542).

8219472455078 is a wasteful number, since it uses less digits than its factorization.

8219472455078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109736227541.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 8219472455078 in words is "eight trillion, two hundred nineteen billion, four hundred seventy-two million, four hundred fifty-five thousand, seventy-eight".