478421222399 has 32 divisors (see below), whose sum is σ = 555780320640. Its totient is φ = 409031884800.

The previous prime is 478421222329. The next prime is 478421222519. The reversal of 478421222399 is 993222124874.

It is a Cunningham number, because it is equal to 691680²-1.

It is a cyclic number.

It is not a de Polignac number, because 478421222399 - 2⁸ = 478421222143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478421222399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478421222329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345839 + ... + 1037519.

It is an arithmetic number, because the mean of its divisors is an integer number (17368135020).

Almost surely, 2^478421222399 is an apocalyptic number.

478421222399 is a deficient number, since it is larger than the sum of its proper divisors (77359098241).

478421222399 is a wasteful number, since it uses less digits than its factorization.

478421222399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691811.

The product of its digits is 3483648, while the sum is 53.

The spelling of 478421222399 in words is "four hundred seventy-eight billion, four hundred twenty-one million, two hundred twenty-two thousand, three hundred ninety-nine".